The paper introduced the structure, basic principles and control patten of seed rate of the double hole.

介绍了复式型孔的结构、基本原理和控制排种量的方式。

youdao

The paper introduced the structure, basic principles and control patten of seed rate of the double hole.

介绍了复式型孔的结构、基本原理和控制排种量的方式。

youdao