Vacuum test
[化] 真空检验
🧩 词语组成解析
🗣️ 情景例句
English.
英语。
I know the boy whose father is a ball player.
我知道那个男孩的父亲是球员。
Instruments have been devised and can be so placed that all three elements can be recorded in different graphs.
已经设计出了一些仪器，它按照一定的安放方式就可测绘出这三种运动的曲线图。