point block是什么意思

用法例句

The shadow and block efficiency of the heliostats in the heliostat field considering the shadows of the tower in the tower Solar Power Plants(SPPs)has been obtained by geometry optics.

经几何光学分析,导出了考虑接收塔阴影影响的太阳能塔式热发电站的定日镜有效利用率计算公式,并通过算例比较了考虑与不考虑接收塔阴影影响的定日镜有效利用率计算结果,验证了这些计算公式的正确性和考虑接收塔阴影影响的合理性。

An experimental installation of column aeration system using activated sludge process was set up to treat brewery wastewater.

采用塔式曝气活性污泥法进行了啤酒废水的处理研究。