Warning: file_put_contents(/www/wwwroot/ppbbu/52065.com/cache/0e7317a780604591b61608a02017e2ac.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/52065.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_伍贰汉英词典
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; 手持式油位计以超声波换能器作为传感器件，实现了油位的非接触测量；