Back weld
[化] 封底焊道
🧩 词语组成解析
back
[bæk]
n. 背，背部;背面，反面;后面，后部;（椅子等的）靠背;
vt. 使后退;支持;加背书于;下赌注于;
vi. 后退;倒退;
adj. 背部的;后面的;以前的;拖欠的;
adv. 以前;向后地;
weld
[wɛld]
vt.& vi. 焊接;使紧密结合;
n. 焊接点;黄色植物染料;
🗣️ 情景例句
We had this part of the conversation
我们正谈到这儿
I was born and raised here.
我生于斯，长于斯。
among historians of science a new and more sophisticated picture has emerged.
但在科学史家中间，一个新的更加复杂的伽利略的形象出现了。