Multiple-drilling machine
[化] 多头钻机
🧩 词语组成解析
multiple
['mʌltəpl]
adj. 多重的;多个的;复杂的;多功能的;
n. <数>倍数;[电工学]并联;连锁商店;下有多个分社的旅行社;
multi很多+ple满→多的→多功能的，多样的
drilling
[['dirliŋ]]
n. 演练\\n[医] 钻
🗣️ 情景例句
Thank you.
谢谢。
To manufacture automobiles
生产汽车
and we have to lower into the ground and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.
我们必须把很长的钻杆一节节地钻入地下，然后再从地下拉出来。钻杆顶部安装的发动机带动钻杆旋转，它的底部装有钻头。