Ultermicrometer
超测微计
🗣️ 情景例句
Yes. Have the people arrived?
是的。客人来了吗
How many pieces are you going to take?
你要拿几支？
It was from the study of these that so much was learnt about the interior of the earth.
正是从这两种波的研究中，我们可以了解到地球内部的许多情况。