你们说的正是Lu惊叹的,the ability of ancient craftsmen to interconvert two

来源: 2021-09-21 13:30:36 [博客] [旧帖] [给我悄悄话] 本文已被阅读:

 interconvert two types of motion precisely, in order to fashion the jade rings. 实现可以很简陋,这里,悟出原理是实质性的。