Weld preheating
[化] 焊前预热
🧩 词语组成解析
weld
[wɛld]
vt.& vi. 焊接;使紧密结合;
n. 焊接点;黄色植物染料;
[计] 预热的
🗣️ 情景例句
No, no, you were right. I was wrong.
确实不容易 说对了。我错了。
My schedule is very flexible, and I am given a lot of freedom.
我的工作表很有变通性，使我十分自由。
How often do you write?
你们隔多久写信？