Prestressing
预加应力; 预拉伸
🗣️ 情景例句
I think it's a good idea, Ellen.
我觉得这是个好主意， Ellen。
I am a Michael Jordan fan.
我是迈克尔·乔丹迷。
He has pointed out that the tree is a useful source of income as tour-ists have been coming from all parts of the country to see it.
他指出，由于人们从全国各地纷纷前来参观这棵树，