您要查找的是不是：
- A mathematical model for groundwater pollution in a leaky aquifer system,which involves the adsorption of semipervious layer,is presented. 提出了一个越流含水层系统考虑弱透水层吸附作用的地下水污染数学模型。
- She said the research also will help scientists to better understand the aquifer system of the Yucatan because the crater controls the water supply. 她说：“这样会让这些海洋生物无法使用自己的声纳定位系统来寻找食物。”
- Through analyzing the water sampled from different aquifer system, it suggests that obviously different hydrochemical characteristics are present in these kinds of water. 经运用聚类分析方法，进一步电算剖析了地下水类型及不同含水层组地下水水化学成分组合特征。
- A mathematical model for groundwater pollution in a leaky aquifer system, which involves main factors relevant to the leaky aquifer system, is presented. 本文提出了一个越流含水层系统地下水污染的数学模型。
- This paper investigates a coastal aquifer system consisting of a confined aquifer from up and down by two semi-permeable layers.The suboutcrop of the aquifer is covered by a silt layer. 摘要通过对一个滨海多层含水层系统的考察，该含水层系统由上、下弱透水层和介于中间的承压含水层组成，海底露头处被淤泥层覆盖。
- 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。
- Leaky aquifer systems exist extensively all over our country, but there is not yet a model for groundwater pollution in a leaky aquifer system reported. 越流含水层系统在我国分布十分广泛，但国内有关越流含水层系统的地下水污染模型尚未见报导。
- normally pressured aquifer system 正常压力含水层系
- In order to establish the mathematical model for groundwater pollution in a leaky aquifer system, a solute transport equation in consideration of the leakage and pumping is presented. 为建立越流含水层系统地下水污染的数学模型，本文导出了包括越流项和井流项的溶质运移方程。
- The river had worn a ravine between the hills. 那条河在两山之间已造成一个深谷。
- Can we dredge the river to make it deeper? 我们能不能把这条河疏浚得深一点？
- Navigation is difficult on this river because of the hidden rocks. 因为河上有暗礁，所以在这条河上航行很困难。
- The police dredged up the parcel from the muddy river. 警方从浑浊的河水中捞出包裹。
- A pregnant lady rescued him from the Suzhou River. 一个孕妇把他从苏州河救了起来。
- The river opens out suddenly into a broad estuary. 江面忽然开阔起来，形成一个宽广的河。
- The river flows through the city from east to west. 这条河从东到西贯穿这座城市。
- We ferried the river on a small boat. 我们用小船渡过那条河。
- The fish plopped back into the river. 那鱼扑通一声跃回河中。
- They were standing in the river spearing fish. 他们站在河里叉鱼。
- He was sent up the river for a bank robbery. 他因抢劫银行而被捕入狱。
