Weak light is one of the important environmentalcharacteristic in the protected cultivation, and the shortage of light is greatly influencing the yield and the quality of the vegetable products.
弱光是设施栽培中一个重要的环境特点，光照不足严重地影响着蔬菜产品的产量和品质。
2
It is mainly analyzed from four aspects: the environmental factor, the organizational factor, the knowledge characteristic and individual factor.
主要从内因和外因两个方面入手，其中内外因包括环境因素和组织因素、内因包括知识特性和个人因素。
3
The equipment environmental adaptability, like its functionality, performance and reliability is an important quality characteristic.