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
and get right to the graduation party?
直接就是毕业派对？
We can offer you a price of 8 pounds per item, from 20 days, after which the price will be subject to an increase of 5%.
我们给您报价每件8英镑，有效期20天，过期价格增加5%。
Aunt Harriet presided over an invisible army of servants that continuously scrubbed, cleaned, and polished.
哈丽特姑妈统率着一支看不见的佣人大军，他们不停地擦拭、清扫、刷洗。