Weld preparation
[化] 焊缝坡口加工
🧩 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;
🗣️ 情景例句
He prays every night before sleep.
他每晚睡觉着都祈祷。
Generally speaking, it's cheaper but slower to ship goods by sea than by rail.
总的来说，海运比铁路运输更便宜，但速度慢一些。
As it was extremely narrow, the man was unable to move,
由于烟囱太窄，那人无法动弹。