A study on the Trionyx production system development in the East Gansu aquicultural farm

By analyzing the physical geography, regional hydrology and geology information, and groundwater equilibrium of DunHuang Basin, this paper simulates the aquiferous layer which has the thickness of 250 m, and consider it as two dimension mixed layer which is heterosphere and isotropy.

通过敦煌盆地自然地理和区域水文地质及盆地地下水均衡分析，将250m左右深度处稳定流线以上的含水层作为数值模拟对象，概化为非均质各向同性平面二维流混合层；

The saturated gas layer of riverside groundwater resource don't defend the aquiferous layer well, so it pollutes the groundwater when the river that was polluted filter into and replenish the groundwater, it threatens the human's health if the groundwater was drank.

傍河取水水源地包气带防护性能差，被污染的河水在入渗补给地下水的过程中对地下水造成了污染，饮用后直接威胁人体健康。

Therefore, the migration and residual characteristics of oil pollutants in aquiferous media and the relationship between residual oil content and oil& media properties are necessary to be studied, which has great significance and application for the evaluation, control and in-situ remediation of oil-contaminated fields.

研究石油污染物在含水介质中的迁移与残留特征，建立油品残留量与油品和介质特性的关系，对于石油污染场地的评估、控制和原位修复等具有重要的科学意义和应用价值。

The subsystems are not only controlled by their exterior dynamical conditions ( precipitation, evaporation, surface water, groundwater), but also controlled by the inner dynamical conditions ( aquiferous medium circulation conditions); thus, they have unique ground water dynamic field.

各地下水动力亚系统受外部动力条件（降水、蒸发、地表水、地下水）的制约，同时受内动力条件（含水介质循环条件）的控制，形成了独特的地下水动力场；

Firstly, soil aspect, the non-balanced time series model for forecasting soil aquiferous capacity is built up by stochastic theory, and the BP network model is set up by MATLAB artificial neural network tool, the forecasting result is very good.

第一，关于土壤方面，利用随机理论建立了预测土壤含水量的非平稳时序模型，同时运用MATLAB人工神经网络工具箱建立了土壤含水量预测的BP网络模型，取得了较为满意的效果。

According to occurrence conditions of aquiferous zone, groundwater conducting zone and storage segment of water-resistance for lower group coal, seven types criterion models of mining under high pressure was concluded and corresponding groundwater hazards controlling policy was put forward.

根据显水带、导水带及阻水储备带相对下组煤在空间上的赋存状况，总结归纳出7种带压开采判别模型，并提出了相应的具体防治水对策。

On the basis of the characteristics of aquiferous gas wells in this area, some suggestions on the depth for gas-lift valve at the top, valve opening's diameter and calculation process are presented for reference in gas-lift design.

根据该区有水气井的特点，提出顶部气举凡尔设置深度、阀孔直径和计算序次等方面的意见，供气举设计参考。

Circulation of water on land and status of water environment have been largely changed by the interception of dams, "aquiferous rivers" or rivers which being reservoirs have been the universal problem in the word.

水坝拦截极大地改变了陆地水循环和水环境状况，蓄水河流或河流水库化已成为全球普遍问题。

Firstly, aiming at the disadvantage factors such as great length, thin earth covering, loose aquiferous ground, and strict requirement for settlement, construction technique of Underpass Bridge jacking is introduced in detail.

首先针对地道桥顶进长度大、覆土厚度薄、地层软弱、地面沉降控制要求严等不利因素，详细介绍了地道桥顶进的施工技术。

Through an analysis of dynamics of groundwater,-we have studied the structure, occurrence, runoff and changes with space and time of karst aquiferous system. The model of groundwater planning and management has been designed.

从分析研究区域内岩溶地下水的动态特征入手，对岩溶含水系统的结构、地下水赋存、径流及时空变化进行了研究，研制了水资源规划及管理模型；

In Chengde area, water table is shallow, gravel bed is the main aquiferous layer and its penetrability coefficient is comparatively large, settlement radius caused by dewatering is large as well.

承德地区地下水位较浅，含水层主要为圆砾层，并且渗透系数较大，基坑降水引起的地面沉降半径也较大。

Text also explain climatically the reason why only these are lots of thatching in Yunnan zone based on the aquiferous capability of the couch grass and stability of stake.

本文还根据茅草的蓄水能力和木柱子的稳定性，解释为什么云南地区在过去，会有如此众多的茅草屋存在的气候方面原因。

In the same section of a leaf the area of vascular bundles has the highest content, the aquiferous tissue has the lowest and the chlorenchyma has intermediate.

在同一叶的横切面上，蒽醌类物质的含量在维管束区最高，同化薄壁组织部分次之，储水组织部分最低。

It is obvious that the the distribution of silica acid in interstitial water were affected by the contents of biogenic silica and aluminium, and aquiferous proportion as well.

通过分析发现影响同航次间隙水中硅酸分布的因素主要是生物硅含量、铝含量和含水率。

In this paper, we made use of the datum of 100 drills in Tongliao area for researching the spacial structure character of the fourth epoch aquiferous thickness.

本文应用通辽地区所有深层钻孔资料，对第四系含水层厚度的空间结构特征进行了分析。

The fabrication method of ID photonic crystal includes anodization of p-and n-type silicon with various current densities under aquiferous HF solution of different concentration.

而一维光子晶体的制备方法包括p型和n型单晶硅在不同电流密度下阳极氧化以形成折射率交替变化的多孔硅层，并采用了不同氢氟酸浓度的腐蚀液，以获得最佳的浓度配比。

The geochemical behaviour of heavy metals in river and its effect on shallow aquiferous system of both sides of the river are studied by theoretic calculation and experiments.

通过理论计算和实际试验，研究和分析了河流中重金属元素的地球化学行为及其对两侧浅部含水系统的影响。

For the aquiferous medium with the same oil content, the volatilization mass is higher and the residual ratio is lower with higher temperature and wind speed.

同种条件下，含油量越高，油品在介质中的残留率越高，对于同一含油率的含水介质，温度和风速越高，挥发量越高，介质中油品残留率越低。

Water source includes aquiferous layer, river, water-eroded cave, goaf seeper, preferred faults with abundant groundwater.

水源包括含水层、江河、溶洞和采空区积水、洪水倒灌水、富水优势断裂；

Experiments of the gasoline enging fueled with blends of gasoline and ethanol or aquiferous ethanol

汽油机燃用乙醇和含水乙醇与汽油的混合燃料的试验研究