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
Yes, it does.
是的 ，确实如此。
I ate too much candy. I have a toothache.
我吃了太多的糖果。牙齿在痛哩。
Come up these steps with me, please, and be careful.
请跟我走上这些台阶，请小心点。