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
Now would be a good time, I think, for some introductions.
我想，下面是作些介绍的时候了。
A handful of common sense is worth a bushel of learning.
少量的常识，当得大量的学问。
In the early 1980s, the computer giant, IBM produced the world's first Personal Computer.
80年代初，计算机行业的王牌公司美国国际商用机器公司（IBM）生产出了世界上第一台个人电脑。