The major reason for such low values is the fact that most crop plants display their maximal photosynthetic efficiency for relatively brief periods of time during the life cycle of the plant.

这样低值的主要原因是，大多数作物只能在整个生命周期中相对短的时期内表现出最大的光合效率。

youdao

Ought to systematically be able to complete time displays and stirs the meritorious service capacity such as painting handle and cycle display and so on .

该系统能完成时间显示、汉字动画处理、循环显示等功能。

youdao