常汲井中水最甜，脑越用越灵。
这两种转换电场幅度的相对大小，与地层水矿化度及其与井中水矿化度差异有关。
The relative amplitudes of these two kinds of acoustically associated electric fields depend on formation water salinity and differences of borehole fluid salinity.
将产生的电能给安放在潜入105英尺的井中的水泵供电取水，再将水通过一个小的脱盐单元便可以满足农民饮用水的需求。
They supply the energy for a submersible pump that pumps the water up from a well that is 105 feet deep and for a small desalination unit that satisfies farmers' potable water requirements.
应用推荐