“沟槽”造句

一节沟槽
a length of guttering

一些砂洲和沟槽在低潮位时,露出于水面.
Some of the bars and troughs are exposed by low tide.

极耳产生一种 “ 压力 ” 作用与沟槽侧边相接触.
The lug produces a " pinched " effect contact with the groove side.

• #沟槽