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
His number is 555-8842.
他的电话是555-8842。
But Li Ming has promised to come home for the summer vacations.
但是李明已经答应暑假回家。
You'll be sorry.
你会后悔的。