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Examination of the equilibrium status of a point in the salt water zone and the description of piezometric heads at two points ...

通过考察咸淡水界面之下咸水带任意点的压力平衡关系和咸水带及淡水带任意点的水头描述得知,当地下水流处于稳定状态且满足Dupuit假设时,可以根据同一垂直线上界面之下咸水带任意点的咸水测压水头和界面之上淡水带任意点的淡水测压水头确定滨海均质各向同性潜水含水层咸淡水界面的位置。

Three analytical solutions are given including the wet front analysis solution of double medium soil column,the analytical expression of piezometric tube water head and saturation for steady state and the analysis solution of seepage in unconfined aquifer with a periodic boundary condition.

推导了双介质土柱表层水入渗的下渗锋面解析表达式、稳定状态时测压管水头分布与饱和度分布的解析表达式,并给出了有周期性边界条件的有限潜水层内渗流自由面的解析表达式。

Examination of the equilibrium status of a point in the salt water zone and the description of piezometric heads at two points in both the salt water and fresh water zones reveals that the location of the fresh water-salt water interface in a coastal homogeneous, isotropic unconfined aquifer can be estimated based on piezometric heads at two points in the same vertical line tapping respectively the salt water zone and the fresh water zone (from the water table to the interface) when the groundwater flow system is in a steady state and satisfies the Dupuit assumption.

通过考察咸淡水界面之下咸水带任意点的压力平衡关系和咸水带及淡水带任意点的水头描述得知,当地下水流处于稳定状态且满足Dupuit假设时,可以根据同一垂直线上界面之下咸水带任意点的咸水测压水头和界面之上淡水带任意点的淡水测压水头确定滨海均质各向同性潜水含水层咸淡水界面的位置。

Any of various swimming and diving birds of the family Podicipedidae, having a pointed bill and lobed, fleshy membranes along each toe.

科中能游泳并潜水的任一种鸟类,有尖尖的喙,脚趾间有蹼状的肉膜

Based on the lessons from home and overseas study and investigation and construction in situ, different types of demonstration projects were successfully implemented in Tianjin, Cangzhou, Hengshui and Jiyang, such as "radial well of pumping salt water and replacing fresh water","recycling well of river water-rain floods-phreatic water","enhancing pumpage well by siphone-conectivity way"and has achieved good results under the condition of low-cost.

通过借鉴国内外经验和现场勘查设计施工,在天津、沧州、衡水和济阳等地成功建立了&抽咸换淡辐射井&、&河水-雨洪水-潜水循环利用井&、&虹吸连通增采井&等不同类型示范工程,取得了在低成本条件下的良好效果。

A crew member should be detailed to help divers as they enter the water and, more important, as they reboard the boat.

工作人员不仅仅需要很细致的帮助潜水人进入水中,更重要的是帮助他们如何登船。

By now, I have snorkeled three days, flown a helicopter, riden a boat, and hiked.

此时, 我已潜水三天,坐直升机,搭船和登山。

My 16-year-old son went with one of the guys from our boat to do what's called a drift dive. That's where you take a small boat upstream in a tidal current, jump into the water, and let the riverlike current carry you back to the boat.

我十六岁的儿子跟船上一名潜水员一起去&漂潜&,那种潜水法是撘上一艘小船溯到某道海流的上游处,跳进水里,然后让河水般的洋流把你带回船边。

Nearby Samal Island offers diving enthusiasts the opportunity to view the city's underwater topography.

沙马尔岛附近一带,是爱好潜水及海底摄影人士的天堂。

Our main production SBR diving material, EVA Cai Sepian, high-elastic EVA, back of plastic, embossed SBR, posted a foundry, another earthquake activity insoles-oil plant.

本厂主要生产SBR潜水料、EVA彩色片、高弹EVA、回力胶、压纹SBR、代工贴合、另设活动鞋垫防震油包厂。

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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.

然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。

A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.

付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。