为了正常的体验网站,请在浏览器设置里面开启Javascript功能!

LD 分体内置式

2011-03-08 8页 pdf 520KB 11阅读

用户头像

is_588099

暂无简介

举报
LD 分体内置式 Temposonics® Magnetostrictive Position Sensors L-Series Analog + Digital Temposonics LD Measuring range 50 - 7600 mm m SENSORS � Absolute Sensor � Non-contact Measurement � Modular Construction � Stable Design � Highest Durability � Measuring Range: 50 - 7600...
LD 分体内置式
Temposonics® Magnetostrictive Position Sensors L-Series Analog + Digital Temposonics LD Measuring range 50 - 7600 mm m SENSORS � Absolute Sensor � Non-contact Measurement � Modular Construction � Stable Design � Highest Durability � Measuring Range: 50 - 7600 mm � Linearity: Better 0,02 % � Repeatability: 0,001 % � Direct Analog Output (V/mA) � Digital Pulse Output, Start-Stop A Compact Sensor for Hydro Cylinders � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ! � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " � � � � � � � � � � � � � � � � � � � � � � � � � � � � # � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � $ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � % � � � � � � � � � � � � � � � � � � � � & � � � � � � � � � � � � � � � � � � � � � � � � � � � � ' � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ! � � � � � � � � � � ! � � � � � � � � � � � � � ( � � � � � � ) � � � � � � ( � � � � � � � � * � � � � � � � � � � � � � + � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � , � � � � � � � � � � - . / / � � � � � � � � - * � � � � � � � / � � � � � � ! * � � � � � � � � ! . � � � � � 0 � 1 � � � ! � � � � � � � � � � ! � � � � � � � ) � � � � � � � � � � � 2 � � � � * � � � 3 � � � � � � � � � � � � + � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 2 � � � � � � � ' � 4 � � � � � � ! 3 ( � � � � � � � � � & � * � � � � � � ) � � � � � � � � � * � � � � � ( � � � � � � � � ( � � � � � � � � � � � � � � � � � � 5 � � � � � � � � � � � � � � * � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3 � � � � � � � � � 4 � � � � � � � � � � � � � � � � � � � � � � � � � � � � ( � � � � � � ! � 2 � � � � � � � � � � � � � � � � � � � � 6 � � 7 8 � � � � 8 8 8 � � � � � � � � � � � � � � + � � � � � 6 � � 7 8 � � � 9 : 8 8 � � � ) � � � � 6 � � 8 � � � ; 8 � ) 2 � � � � � � ; 8 � � � 8 � ) 2 � � � � ( � � � � � � � � � � 6 � < 7 � & + � � � � � � � � 6 � = " 8 # � � � � 8 � � � � � � � � 8 � � � = " 8 # � � � � � ( � � � � � ( � % � 8 � � � 7 8 8 � + � � � � � � � � � � � � � � � � 6 � * � � = � � � � � � � � � � � � � � � � � � 7 � > � � � � � � � � � � � � � � � � � � " 0 � # ' � � � � � � � � � � � � � � � � � � 6 � � � � � � � � ' � � � � � � � � � � � ! � � � � � � � � � � � � � 2 � � � � � 6 � 8 ' ; � � � ? � 8 ' 8 ; � � � � " � � � � � � � � � � � � � � � # � @ � A � 8 ' 8 � � > � 0 � � " ( � � � � � � � A � 7 8 � B � # ' � � � � � � � � � � � � � % � � � � � � � � � � � � � � � � � � � � � @ � A � 8 ' 8 8 ; � > � 0 � � � � � � � 6 � ; � & 4 $ � � � 2 � � � � � 6 � � � � � � � � � � � � � � � � � � � � � � � � � � = � ) 2 � � " A ; 8 � > # ; 8 8 � � � � � ! � � � � @ � ; � > � � � & � � � � � � & 7 8 8 � ) � " 2 � � � � � � � � � � � � � � � � � � � � � � � � # � = 8 C � � � � 5 9 7 C � � @ � = 8 � � � � � C � � D 8 � > � � � � � � � � � ! ' � � � � � � � � � � � � � � � 3 � � � � � � � � � � � � � � � � � � � � 3 - � 7 8 8 E ; � � 3 � � � � � � � � � � � � � � � � � � � ! � 3 - � 7 8 8 E � � � 3 - � : ; 8 8 8 � = � � � F � = � : � / � � F � = ' � � � � � � � � � � � / 2 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3 � 1 � � � � � � ; 8 8 � � ' � : � � � � � � � 3 � � � � � � � � � � � : E � � � � 9 ; 8 � � � � � ; 8 � � � � 8 8 8 � 4 $ � � � � 3 � � � � � � � � � � � : E � � � : � � ! � � � � � � � � � � � � � ! � � � � � � � � � � F 7 8 � � � � ' � 9 8 8 � � � � � � � & � � � � � � � � � � : 7 � � � � � � � � � � � � � � � � � � � � � � � � � � � : 7 0 � � � � � � � � � � � � � � � � � � � � ( ; E � % � ; ' 7 * � � � � � � � � � � � � � � � F � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ! � - � � � � � � � � � � � ; ' F = � � � � � � � � � � � G � ; 8 � � � � � � � � � � � � � � F : ' 7 : F ' 7 : = ' F = ; ' ; 7 D ' 7 ; F ' 7 F F 9 ' � : = ' F : ' � D ; F ' 8 E � : ' 7 E : = ' F F � ' ; � � � � D � : ' D � ; � ' 9 � � � � � � � � � � � � " � � � # � $ � � � � � � � � � � � � � � � � � " � � � # % $ 7 ; � : ' D � � F � � � � � � � � � � F � : F ' 7 � 7 7 F ' F = : = ' F 7 F ' F = : = ' F � � � D 7 ' = : 7 ' = : = ; ' ; 7 : = ' F F � � . * � � � � � G � : � � � � � � � � � � � � � � � � � � � � = � � � � � � � � � � � � � � � " � � � # � $ F : ' 7 � � � � � � � � � � � � � � � � � � � � � ! � � � � ! � � � � � � � � � � � � � � � � � � � ( � � � � � � � $ � � & � � ' � � � � � � ( � � � � � ! � � � � � � & � � � � � � � � � � 6 � 7 8 � � � � 8 8 8 � � � � � � � � � 6 � � 7 8 � � � 9 : 8 8 � � � ( � � � � � � � � � � � � ! � � � � � � ) � � � � � � � � * � + � ) � � � � � � � � � � + � ) � � � � , - � . / 0 � � � � � � � - � 1 0 0 � � � � � � � � ( ; E � % � ; ' 7 * � � � � � � = � � � G � = ' F = � � � � � � � � � � � � � � � � � � � & � � � � � � � � � � 6 � 7 8 � � � � 8 8 8 � � � � � � � 6 � � 7 8 � � � 9 : 8 8 � ( � � � � � � � � $ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � F � � � � � G � = ' F = � � � � � � � � ' � � � � � � 2 � � � � ! � � � � � � � � � � � � � � $ � � : : � " < � = 7 8 8 � � � � � � � & � � � � # � � � � + � ) � � � � , - � . / 0 � � � � � � � - � 1 0 0 � � � � . * � � � � � G � : � � � � � � � � � � � � � � � � � � � � = � � � � � � � � � � � - � � � � � � � � � � � � � � � � � � � � � G � ; 8 � � � � � � � � $ � � : : � " < � = 7 8 8 � � � � � � � & � � � � # � � � � � � � � � � � � � � � � � " � � � # � $ � � ! � � � � � � ) � � � � � � � � * � + � ) � � � � � � � � � � � 3 ( � + � + - � � � � / 2 � � � � � � � � � � � � � � � � � � � � � � � � � � ! � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ! � � � � � � � � ! � � � � � ' � � � � � � � � � ! � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ! � � � � � � � � � � � ! � � � � � � � � � � � � � ! � � � � � � � � � � � � � � � � � � � � % � � � ! � � � � � � � � � � � � � � � � � � � � � � � � � F � � � � � � � � � � � H � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � H � � � % � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � H � � � � � � � � � � � � � � � � � ' � � � � � ! � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ! � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � I � � � � � � � � � 8 � 8 � � = � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � & � � � � ! � � 2 � � 2 � � � � � � � � � � � � / 2 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ' � � � � � � � � � � � � � � � � " 8 � ; 8 � ) # � � � � � � � � � � � � " = � � 8 � � � � 8 � � 8 � � � # ' � � � � � � � � � � � � � � � � � � � � � � � � � J � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 7 > � � � , � � � � � � � � � � � � $ � � � � � � � � � � � � � � � � � � � � � * � � � � � � � � � � � � � ! � � � � � � � � ! � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ' � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3 4 3 4 � � � � �� � � � ; � F = � � � � � � � � � � � / 2 � � � � � � � � ! � � � � � ! � � � � � � � � � 5 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ! � � � � � � � � � � 5 � � � � � � 2 � � � 2 � � � � � � � � � � � � � � � � � / 2 � � � � 1 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 1 � � � � � � � � � � � � � � � � � � � � � � � � � � � % � � � � � � � � � � � � � � � � � � � � � � � � � � � � ! � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ' � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ! � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � K � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ! � � � � � � � � � � $ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ! � � � � � � � � � � � � � � � � � � � 2 � � 2 � 0 � � 6 0 � 7 � 5 � 6 0 � � 0 � 7 1 � � . 0 � � & � 5 � . 0 � � 1 � � & 0 � � . 0 � � & � 5 � . 0 � � 0 � � & � � � � � � � � � � � � 8 � � � � � � � � � � - � � � � � � � � . � " ) # � � � � � " � � # � � � � � & � � ' � � � � � � ( � � � � � � � � � � 8 � , � � � � � � � � ' � � 2 � � � � � � 2 � � � � � � � � 5 � � � � � & � � ' � � � � � � ( � � � 7 � � � � � � � � � � ; 8 7 ' E = 7 C G � � � ' D � � � � � � * � 9 � � � ! � � ; � ' 9 ; = ' 9 � � ' D = = ' 9 7 ' E = ' = = ' E 9 ' ; � : ' D � + � * � � � � � ; ' E D � % � � ' : � � � � - � � 7 : 8 � 9 8 7 J � � & � � � * � � � � - � � 7 : 8 � : � D � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � J � � � � 9 � � � � 4 9 9 7 C � ' 7 = � 8 7 F � � 8 ' F � + " � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � / 2 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ! � � � � � � � � ! � � � � � � � ( � � � � � � � � � � � � � / 2 � � � � � � � � 1 � � � � � � � � � � � � � � � + � � � � � � " � � � & # � � � � � � � � � � & � � � � � � � � " � � � � � # � J � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � % � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � - L � � � � � � � � � � � � � � � � � � � � � � � � � � � ' � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3 ( � � � � � � � � � � � � � � � � � � ! � � � � � � � � � � � � 4 � � � � ' � � � � � � / 2 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ! ' � � � � � � � � � � � � � � � � � � � � & � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " � � � # � $ � � � � � � � � � � � � � � � � : � 2 � � � ! � � � " � � � # % $ � 2 � � � � � � * � , � � � � � � � � � � � � * � + � � � � � � 2 � � � � � � � � � � ; � � � � � � � � / < / = � � � � � � � , - � � � ( � � � ; 8 � � 8 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � : � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 9 & + � � � > � ? � � @ + � ) � � � � � � � � � � � � � � � 2 � � � � � � � � � � � � � � + � � � � � 6 � : � � � � � � � � � � � � � � � � � 2 � � � � � � � � � � � � � � � � � � � � � � 6 � � � � � � � � + A � � � � � � � ? � � @ + � ) � � � � � � � � � � � � � � � � � � � � � � � � � � � � D ; 8 ; ; ; � ; F � � � � + � � � � � � � � � � ! � � � � � � � � � � � � ! � � � � & 9 2 � � � � � ) � � � � 3 � � � � K - 2 L K � " � # L K � " 5 # 0 � � � � K - 2 � � � � � � ! ! � � � � � � � � � � � � � & & � � � � � � � � * � 0 � � � � � � � � � � ! � � � � � � � � � � � � � � � � � � � � � 3 ( � � � � � � � � � � � � � � � � � � � � � ; � � � � � F � � = � � 7 � � : � � � � � � * � � ) � � � � � � � � � � � � � � : � � � � � � � � � F � � � � ; � � � � = � � � � 7 + � � � � � � � � � � & ! � � � � � ! � � � � � � � � 9 2 � � � � � 2 � � K � � � � � � " 8 ) # � � � � � " 5 # � � � � � � " 5 # � � � � � " � # � � � � � � " � # 5 � = � ) 2 � � 1 < � . 6 6 - � � � � � � 5 � � � � � � 2 � � 2 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ; � � � � � F � � = � � 7 � � : � � � � � � * � � ) � � � � � � � � � � � � � � : � � � � � � � � � = � � � � ; � � � � F � � � � 7 + � � � � � � � � � � & � � � � � � ! ! � � � � � � � 9 2 � � � � � 2 � � K � � � � � � " 8 ) # 2 � � K � � � � � 2 � � K � � � � � 8 � ; 8 � ) � = " 8 # � � 8 � � � B ; 8 � 8 � ) 5 � = � ) 2 � � 1 < � . 6 . - � & � � � � ! � � 2 � � 2 � � 0 � � 6 0 � 5 � 6 0 � � 0 � 7 � � � � � 1 C 0 D � � . 0 � � & � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ; � � � � � F � � = � � 7 � � : � � � � � � * � � ) � � � � � � � � � � � � � � : � � � � = � � � � � � � � � F � � � � ; � � � � 7 + � � � � � � � � � � � � � & ! � � � � � ! � � � � � 9 2 � ( � � � � 2 � � K � � � � � � " 8 ) # 2 � � K � � � � � � � 8 � = " 8 # � � � B � 5 � = � ) 2 � � 1 < � . 6 < - � & � � � � ! � � 2 � � 2 � � . 0 � � 1 C 0 D � � & � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � & � � � � � � � E � + � ) � � � � � � � � � � � � � � � + � @ � � 2 � � � � � ' � � � � � ) � � � � � � � � � � � � � � � � � � � � " E 3 � � � � � � � � � � � � � � � M � ( � � � � � � � � � � � � � � � � � � � � � � � � M � ( � � � � � � � � � � � � � � � � � � 3 � � � � � � � � � � � � � � M � 2 � � K � � � � � � " 8 ) # ' � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � M � ( � � � � � � � � � � � � � � � � � � � � � � M � ( � � � � � � � � � � � � " � � � � � @ � � 2 � � � � ! � � � � � � � � � � � � � � � � � : � 2 � � � ! B � � � � " � � � � � � � � � 2 � � � � � � � 2 � � 2 � � � � � � � � ' � � � � 0 � � � � � � � � � � � � � � � � � � � � " � � � � � 1 � � . 0 � � & � � � � � � ! � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 5 � 5 � ) � � � � � � � � � � � � 0 � � � � � � � � � � � � � � � � � � � 0 � � � � � � � � � � � � � � � � � � � ; � F = 7 : 9 E D; 8; ; ; � ; F F 6 F . � � 9 � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � " � � � � M � 0 � � � � � � � � � � � " � � � � � � � � � N J O � � � ! # � � � M � � � � � � � � � � � � " � � � � � � � � � N � O � � � ! # � � � � � � � � � � � � � � � � � � 2 � � � ! � � � " � � % � M � J � � � � � � � � � � � � � ! � � M � � � � � � � � � � � � ! + � ) � � � � " � � � � � � � � � � � � � � 2 � � � ! � � M � � ) � � � � � : � M � � . * � � � � � + � ) � � � � 2 � � � � � � � M � � � � � � � � � � � M � � � � � � � � � : � � � � � � � � � � � � � � � � + � ) � � � � � � ! � � � � � � � � � � � � � � 2 � � � ! 0 . � M � � � � � � � ' � � � � � � � � � � 0 6 � � 6 0 � M � 8 ; � � � � � � � ; 8 � � � � � � � � � � 2 � � � ! � � � � ! � � & � � � � ! * � 8 8 7 8 � � � � 8 8 8 � � � � � ! � � � � * � 8 8 7 8 � � � 9 : 8 8 � � � � � 2 � � ' � � � � ! � . � M � 5 � = � ) 2 � � � 2 � � 2 � � � � ! � � � � 0 � M � � � � � � � � � � � 7 0 � M � 8 � � � ; 8 � ) � � � � � ; 8 � � � 8 � ) & 0 � M � = � � � � 8 � � � � � � � � � � � � � � � � � � & 6 � M � � 8 � � � = � � � & . � M � 8 � � � � 8 � � � & < � M � � 8 � � � 8 � � � � � � ! � � � � � ) � � � � � � ! � � � � � � � � � � � � � � � � 6 � M � � 9 8 � � � � � . � M � = 8 8 � � � � � � � � .� � � � � � � � � � � � � � � � � � � � � � � � � � ; E 7 E 7 E ; E � � � � � � � � & � � � � � � � � * � � � � � � � � � � + 2 F F ' � � � � � � � � � . � ( � � � � � + 2 F F � � * � � � � � � � � � � + 2 � 7 ' = : � � � � � � � � � � � � � � � � � � � � � + � * � � � J � � & � � � * � � � � � � � � � � - � 8 ; � 7 = � � � � 7 ; � = ; : � � = 8 8 � 7 F F � � � � 8 � D ; F ; � 2 7 : 8 � 9 8 7 7 : 8 � : � D � � � � � � � � � � � � � � 6 � � � � � � � � � � � � ) � � : � � � � � 2 � - � � � � � � � � � � � � � � � � � � � - � � � � + 0 � = 6 < 6 � : 0 � : � � � � � 2 � - � � � � � � � � � � � � � � � � � � � � - � � � � + 0 � = 6 < 6 � � � 4 � � � � � � 6 � P � � � ' � � � � & � � � � � � � � � � � � � � � 6 � � � � � � � � � � � � � � � � � � 6 � � � � � � � � � � � � � � � � � � 6 � � � � 9 � � � � G 6 � : � � � � � � � � � � � ' � � " * � � � � � � � � � � � � � � � � � � � 3 � � �
/
本文档为【LD 分体内置式】,请使用软件OFFICE或WPS软件打开。作品中的文字与图均可以修改和编辑, 图片更改请在作品中右键图片并更换,文字修改请直接点击文字进行修改,也可以新增和删除文档中的内容。
[版权声明] 本站所有资料为用户分享产生,若发现您的权利被侵害,请联系客服邮件isharekefu@iask.cn,我们尽快处理。 本作品所展示的图片、画像、字体、音乐的版权可能需版权方额外授权,请谨慎使用。 网站提供的党政主题相关内容(国旗、国徽、党徽..)目的在于配合国家政策宣传,仅限个人学习分享使用,禁止用于任何广告和商用目的。

历史搜索

    清空历史搜索