酸值

It's like having a gear factory on-line that can create spur, bevel, internal, rack gear and roller chain sprockets from your data input.

这就像一个齿轮厂上线，可以创造刺激，锥，内部，机架齿轮和滚子链的链轮从您的数据输入。

The story is told that he used to invite guests just to watch him knot his white cravat.

传说他常邀请客人专程去观看他给自己白色的领带打结。