Drilling unit
[机] 钻床的动力组合单位
🧩 词语组成解析
drilling
[['dirliŋ]]
n. 演练\\n[医] 钻
unit
['ju:nit]
n. 单位，单元;装置;个体;[数]单位数;
🗣️ 情景例句
I've never worn them before.
我从来没有戴过这个。
Yes, we have been interested in new system.
是的，我们对新系统很感兴趣。
It was upon this principle that the first instruments were made,
据这一原理，制造出了最初的地震仪器，