Hub plan
[计] 轴式方案
🧩 词语组成解析
hub
[hʌb]
n. 轮轴;中心，焦点;（电器面板上的）电线插孔;[计]集线器;
plan
[plæn]
n. 计划;打算;平面图;示意图;
vt.& vi. 计划，打算，设计;
🗣️ 情景例句
The movie was a blockbuster.
这电影很成功。
This material feel soft, How does that material feel?
这种布料感觉起来很软，那块料子如何呢？
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。