Arealometer
纤维细度气流测定仪
🗣️ 情景例句
He's stepped out of the office for a little while.
他离开办公室刚一会儿。
We are sorry to delay the shipment because our manufacturer has met unexpected difficulties.
恕延期货船，因为我们厂家遇到了预料不到的困难。
The development of films with sound became a problem for Chaplin.
有声电影的研制对卓别林来说就成了问题。