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
I just have my driver's license with me. Is that enough.
我身上只带了驾驶执照，这样够了吗？
It is wisdom sometimes to seem a fool.
大智若愚。
We have our evening meal at about a quarter past six.
我们6：15分左右吃晚饭。