Backing weld(ing)
[化] 打底焊
🧩 词语组成解析
backing
[['bækiŋ]]
n. 后退, 衬背, 后援, 支持者\\n[化] 衬垫
🗣️ 情景例句
He'll be back soon.
他很快就回来。
How much is the postage for this?
这个邮费要多少钱？
If one group of people were disturbed from their eye-movement sleep for several nights on end,
如果有两组人，一组人连续几夜在眼球队活动时被叫醒；