An aquiclude stores water but does not transmit significant amounts.
一个不透水层只存水但不能大量导水。
Water pressure outside pressure tunnel under water-tight layer and effective stress of seepage
不透水层压力隧洞外渗透压力和渗流有效应力
Model Test Research about the Fixing Methods of Tunnel s Water-tight Layer;
隧道不透水层确定方法模型试验研究
Study on control of secondary salinization within development experiment area with method of impermeable layer-blasting
利用爆破不透水层法治理发展实验区次生盐渍化探析
impermeable barrier
不可渗透层;不渗水层;不渗透遮挡层;不透层;不透水隔层
The external layer of the skin is relatively impermeable to water.
皮肤的外层不透水。
Construction of Deep Groove Integration Precipitation in the Soft Soil Containing Impervious Interlayer
含不透水隔层软土中深沟槽综合降水的施工
An aquitard stores water and transmits enough water to be regionally significant but not enough to supply inpidual wells.
弱透水层存水且区域性地传导大量水，但不能充分供给每个井。
When rain falls, the loess particles on the surface layer swell and form a crust that is almost impermeable to water.
降雨时，表层的黄土粒就发生膨胀并形成一层几乎是不透水的表皮。
differential transparency of atmosphere
不同层次的大气透明度
relative ionospheric opacity meter
相对电离层不透明度仪
water-tight case
不透水外壳, 耐水外壳
Along with age increase of vegetation, ability of water retention in shallow layer soil increased, and an anti-water layer was formed.
随着植被年龄的增加,浅层土壤截留降雨能力不断加强,最终形成不透水土层。
Application of iterative method forevaluation of permeability coefficient of phreatic aquifer;
运用迭代法推求潜水含水层渗透系数
closed so tightly as to be airtight or watertight.
关闭的很紧的，不透气的或不透水的。
Impervious to or unaffected by water.
防水的不透水或不为水所影响的
of such close construction as to be impermeable.
结构紧密以至不透水的。
hearting concrete
不透水的心墙混凝土