1) decline of the phreatic table
潜水位下降
2) phreatic fluctuation
潜水面升降;地下水位升降
3) drawdown
[英]['drɔ:daun] [美]['drɔ,daʊn]
水位下降
1.
Research on unsteady seepage problem of bank slope due to drawdown of reservoir water level;
库水位下降时的岸坡非稳定渗流问题研究
2.
The calculation shows that the safety factor declines with the drawdown of the water level under the drainage condition.
计算结果表明,当土体设置为排水条件时,在库水水位下降过程中,安全系数随水位的下降逐渐减小,但当水位下降了20 m以后,由于孔隙水压力给滑面提供了竖直方向的作用力,随着水位的继续下降安全系数反而略有上升。
4) water lowering
水位下降
1.
Owing to the overexploitation for groundwater thus leading the water lowering of groundwater, the formation and enlargement of the cone of depression, and the ground subsidence, such being the case, the geologic hazard will easily occur at any time.
因过量开采地下水而引起地下水水位下降，降落漏斗形成并扩大，同时引发地面沉降，造成地质灾害发生。
5) water level descending
水位下降
1.
Some problems, such as water level descending and water quality worsening caused by over-exploration of underground water analyzed.
介绍了山东省冠县的水文地质条件和地下水资源开发利用现状，分析了由于过量开采浅层地下水而引发的水位下降及水质恶化等问题，提出了合理开发利用地下水的建议。
6) water level drop
水位下降
1.
Research on causes and countermeasures of groundwater level drop in the Shiyang River Basin
石羊河流域地下水水位下降原因及对策研究
2.
The research indicates that the difference of riverbed scour resistances can cause the non-uniform water level drop;and the navigation channel at some reach which has strong scour resistance will possibly be confronted with the problem of shortage of water depth,steep water surface slope and high flow velocity in future.
研究认为,本河段河床抗冲性的差异导致沿程水位降幅不一;在未来河床冲刷和水位下降过程中,局部抗冲性强的河段将可能面临水深不足和坡陡流急的碍航局面。
补充资料：轻潜水(见潜水装具)
轻潜水(见潜水装具)
light diving
qingqiQnshu-轻潜水(li ght diving)见潜水装具
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条