Prestressing
预加应力; 预拉伸
🗣️ 情景例句
You seem to have some reservations.
看起来你还有些犹豫。
I meet the boy whose aunt is a TV announcer.
我遇到那个男孩的姑妈是电视播音员。
and that their rims are clean and dry.
瓶口清洁干燥。