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
Do you have a story?
你有什么新闻故事呢
A man is as old as he feels.
老不老，自己晓。
It weighed nearly 500 pounds.
重达500磅左右。