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
Good night, Alexandra.
晚安，Alexandra。
Never say of another what you would not have him hear.
莫说不想让人听见的话。
Half the world's telephone calls are made in English.
全球1/2的电话是用英语打的。