Warning: file_put_contents(/www/wwwroot/ppbbu/28094.com/cache/3791addb7cf096c72a14070db184ef3c.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/28094.com/index.php on line 55 ultrasonic level meter例句_ultrasonic level meter英汉例句_ultrasonic level meter双解例句_贰靶汉英词典
In the handheld type oil-level meter, the ultrasonic sensor was used as transducer to detect the oil-level which was achieved by no contact; 手持式油位計以超聲波換能器作爲傳感器件，實現了油位的非接觸測量；