Concave filiet weld
[机] 凹面堆角熔接
🧩 词语组成解析
concave
['kɔn'keiv]
n. 凹面，成凹形;
adj. 凹的;
vt. 使成凹形;
weld
[wɛld]
vt.& vi. 焊接;使紧密结合;
n. 焊接点;黄色植物染料;
🗣️ 情景例句
Want to hear them?
你想听听吗？
This is the last time I'll ever ask you to do anything for me.
这是我最后一次要求你为我做事情。
They were not fighting men, and their harp was their passport.
他们不是作战人员，竖琴就是他们的通行证。