This employs high-pressure pumps to force the water from brine through a membrane that is impermeable to salt.
这种方法需要用高压泵使海水通过一种不能渗透盐的薄膜，从而淡化海水。
Devising a suitable membrane-tough enough to withstand the pressure while remaining permeable to water but not to salt-is harder than it sounds.
设计一种适合的膜非常困难：一方面要足够坚韧，以承受压力；但同时还要有渗透性，而且只能透水，不能透盐。
Multipass Internal Pressure Type Hollow Fiber Membrane is the best choice for purifying water.
多通道内压式中空纤维膜，洁净水处理的最佳选择。
By the pressure of the water molecules (small molecules) selectively through the effect of the reverse osmosis membrane, that is, reverse osmosis principle.
借助压力使水分子(小分子)有选择透过作用的反渗透膜，即是反渗透工作原理。
The mechanisms of pressure solution can be classified as water membrane model, island channeling model and Gratz model.
压溶作用机理的基本模式为水薄膜模式、岛状沟道构造模式、格莱茨模式。
Second, the state of inter-aggregate pore water of cohesive soil is determined by(balanced) condition between damping of bound water membrane and permeability pressure of hydraulic gradient.
粘性土团粒间孔隙水的连通状态决定于团粒接触点附近渗透结合水膜的粘滞力和外界水力梯度的渗透力之间平衡状况；
The main performances of geo-composites made of geo-nonwoven and geo-membrane are tensile properties and water-proof pressure. The influence factors of them are much complicated.
非织造复合土工膜的主要性能指标为拉伸力学性能指标和耐静水压力指标，其影响因素复杂。
In addition, a lye-feeding device and a middle water tank are arranged between the water outlet of the primary reverse osmosis membrane and the water inlet of the secondary high-pressure pump.
另外还在一级反渗透膜处理水出口与二级高压泵进水口之间设置了加碱液装置和中间水箱。
In addition, a lye-feeding device and a middle water tank are arranged between the water outlet of the primary reverse osmosis membrane and the water inlet of the secondary high-pressure pump.
另外还在一级反渗透膜处理水出口与二级高压泵进水口之间设置了加碱液装置和中间水箱。
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