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
And miles to go before I sleep,
在我就寝前还得赶许多哩路
Come on now-buck up-face the music-nose to the grindstone.
快振作起来，面对现实，埋头苦干。
The price is reasonable.
价格还算合理。