Simple estimate is to pass the light spot diameter is 2 times or more.
简单的估计，是让通光直径是光斑的2倍或以上。
The diameter and quantity of the spot were coincided with the field disease index.
病斑直径和数量变化与田间病情动态基本一致。
The diameter and quantity of the spot were coincided with the field disease index.
病斑直径和数量变化与田间病情动态基本一致。
应用推荐