例句與造句

1. Standard practice for measuring the change in length of fasteners using the ultrasonic pulse - echo technique
   使用超聲脈沖回波技術(shù)測(cè)量緊固件長(zhǎng)度變化的標(biāo)準(zhǔn)操作規(guī)程
2. It's difficult to find pulse-echo technique in a sentence. 用pulse-echo technique造句挺難的