varying-head

基本解释

Water infiltration of water storage pit irrigation is under varying-head conditions.
蓄水坑灌条件下的土壤入渗是在变水头作用下进行的。
The research results will have an important value for to study further varying-head infiltration and soil moisture characteristic of water storage pit irrigation .
这一研究成果为进一步研究蓄水坑灌条件下的变水头入渗及土壤水分运动特性奠定基础。
In the meantime the time variation of the water level in the ditch has been taken into account, therefore the groundwater head are time-varying as the groundwater flows toward the drain system.
在讨论这个问题时，又考虑进了排水沟中的水位也是随时间而变化的，因此在地下水流动过程中的任一瞬时，其地下水头差也是一个变量。