Diesinking
模具型腔的加工
🗣️ 情景例句
I'm not doing anything.
我没有要做什么。
Is there any discount for the USA Railpass?
火车通行证有折扣吗？
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。