... fall head of water 降落水头; 下降水头 fall in water level 水位降落 fall of water level 水位降落 ...
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Based on the existing unsteady seepage program for earth DAMS with fall in water level, unsteady seepage program with rise and fall in water level is worked out.
在库水位下降的土坝非稳定渗流计算程序的基础上，编制了库水位升、降的非稳定渗流计算程序。
The water level in a confined aquifer will fall as the confined aquifer is being exploited.
开采孔隙承压含水系统，引起含水层水头下降。
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