回转柱塞泵机构原理图:what's wrong? i can't understand what you are saying.

来源:百度文库 编辑:查人人中国名人网 时间:2024/04/26 18:35:07
what's wrong? i can't understand what you are saying.
是什么意思?

怎么了!我不明白你在说什么。

怎么了,我不明白你在说什么!

我不明白你在说什么!

不明白你想问什么