Backstep welding
[化] 分段退焊
🧩 词语组成解析
后退
a. 焊的\\n[机] 熔接, 焊接, 锻接
🗣️ 情景例句
Maybe you could come to visit me in Greece?
也许你可以到希腊来看我？
Greatest genius often lies concealed.
大智若愚。
How do you know?
你怎么知道？