The approach to solve the problem is to set stiffening ring effectly.
正确地设置加强圈，可有效地解决此问题。
Vertical greening and roof gardening is a form of stereo virescence which improve urban green uantity and esthetic effectly.
垂直绿化和屋顶绿化是立体绿化一种形式，是增加城市绿量和形成城市美好景观的好方法。
Grass forages grow fast and have many tillers, which restrained weeds effectly. While leguminous and composite fodder grow slowly which is at disadvantage on competing with weeds during seedling.
禾本科牧草在生长过程中分蘖多，长势快，抑制杂草的生长，而豆科牧草和菊科牧草苗期长势缓慢，在与杂草杂草竞争中处于劣势。
应用推荐