water column head

基本解释

To provide accurate reading of head pressure , the line should connect at the base of the water column.
为了提供精确的水头压力参数，管线应该连接到水柱的底部。
For the sun and sand, scoop up your laptop, head to the beach, plop down near the water's edge, and read this column.
置身于阳光和沙滩中，面朝海滩，打开便携式计算机，然后阅读本专栏。
Gradation of sand column and sediment concentration of muddy water and water head are remarkably effective factors for the fine grain distribution in sand column.
砂柱的颗粒组成、水含沙量和入渗水头对滞留分布产生显著的影响。