Altmag
阿特马格铝镁合金
🗣️ 情景例句
I love the fresh air, the scenery, the exercise, and the time to think.
我喜欢新鲜的空气、景致、运动以及有时间思考。
She's such a pain in the neck.
她是个如此讨厌的人。
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。