Fluoform
氟仿
🗣️ 情景例句
Get this place picked up immediately. do you read me?
马上把这里收拾干净，听明白没有？
There is no such published information.
没有相关的出版资料。
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。