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, I read you loud and clear.
嗯，我完全明白。
Is the distribution of wealth uneven in your country?
在你们国家财富分配得均匀吗？
She walked slowly into the hall and at once noticed that all the room doors were open,
她慢慢地走进前厅，立即发现所有的房门都敞开着，