Appropriate illuminance shall be ensured for working environment .
工作环境保证适宜的照度。
Maintained average horizontal illuminance of road surface .
路面平均水平照度维持值。
Gentle and comfortable lighting effect does not mean adequate illuminance only .
优雅、舒适的照明效果，不仅仅是提供合适的照度。
Note : the maintained illuminance is the minimum value to which the illuminance is allowed to fall .
注：维持照度是照度衰减所允许的最自小值。
Result showed that the air temperature , soil temperature , relative humidity and illuminance inside the greenhouse changed with the variation of season and had the rules of daily change and seasonal change .
