We have used the CYLINDRICAL gear transmission ratio of small, large, heavy structure.

我们常用的圆柱齿轮传动比小，体积大、结构笨重。

youdao

We have used the CYLINDRICAL gear transmission ratio of small, large, heavy structure.

我们常用的圆柱齿轮传动比小，体积大、结构笨重。

youdao