复水

Among the 10 descriptors, the coplanarity of three phenyl substituents with the imidazole ring, the hydrogen-bond acceptance, the molecular weight and logP are the most important factors for the modulation efficacy.

借助半经验分子轨道法AM1和从头计算法RHF/6-31G计算得到分子的多种描述因子，采用多元线性回归方法进行了结构药效分析，基于分子的结构参数、接受氢键的能力、脂水分配系数等对药物分子半有效剂量的影响提出一套拟合效果比较理想的构效关系方程，其复相关系数和标准偏差分别为0.897和0.323。

Since water covers most of the earth, Cousteau knew that we should keep the sea clean.

由于水复盖地球大部分、Cousteau知道我们应该保持海洋清洁。

By using AC impedance and polarization curve,the corrosion inhibition for cupronickel B30 in 30% NaCl solution by two environment-friendly water treatment medicaments,namely PASP and sodium tungstate ,separately and compoundly is studied.

采用交流阻抗法和极化曲线法，研究了两种环境友好型水处理药剂聚天冬氨酸和钨酸钠的单一配方及其复配对3%NaC l中白铜管(B30)的缓蚀效果。

Yes. From Roundwood reservoir in county Wicklow of a cubic capacity of 2400 million gallons, percolating through a subterranean aqueduct of filter mains of single and double pipeage constructed at an initial plant cost of 5 pounds per linear yard by way of the Dargle, Rathdown, Glen of the Downs and Callowhill to the 26 acre reservoir at Stillorgan, a distance of 22 statute miles, and thence, through a system of relieving tanks, by a gradient of 250 feet to the city boundary at Eustace bridge, upper Leeson street, though from prolonged summer drouth and daily supply of 12 1/2 million gallons the water had fallen below the sill of the overflow weir for which reason the borough surveyor and waterworks engineer, Mr Spencer Harty, C.

48流了。从威克洛郡的容积二十四亿加仑的朗德伍德水库，流经达格尔河、拉思唐、唐斯峡谷和卡洛希尔，流进坐落于斯蒂尔奥根那二十六英亩的水库，中间的距离是二十二法定英里。这条有着过滤装置的第一期施工的单管及复管地下引水渠，根据合同直线每码的铺设费为五英镑。再由一批水堰进行调节，以二百五十英尺的坡度在上利森街的尤斯塔斯桥流到本市界内。但是由于夏季久旱，再加上每天供水一千二百五十万加仑，水位已降到低于排水口。

In order to find out completely the soil-wheat contaiminated by heavy metals in Tianjin sewage farm, we collect samples on the dry land and examinate contents of heavy metals in soil-wheat system. Firstly, the anthor evaluates that soil irrigated by sewage that has been contaminated slightly, the main polluting factors are Cd and Zn, and then the anthor evaluates soil according to different regions, soil types and irrigating water. Secondly, the anthor analyzes content and enrichment ability of heavy metals in different part of wheat, evaluates wheat is contaiminated by Cd widespreadly, only few samples polluted by Zn.Finally the anthor put up correlative analysis about heavy metal contents in the soil-wheat system, as well as plant enrichment coefficient and some physico-chemical properties of soil, and establishes a prognostic model about heavy metal content among wheat spike, soil, soil types, PH, organic matter and salinity with the quantifying theory.The prognostic accuracy of primarily contaminative factors is the best with compound correlative coefficient examining, the model can be founded.With improvement of living level, people need cleaner food.

为全面了解天津市污灌区农产品生产地土壤和旱地作物小麦的重金属污染状况，我们于2004～2005年对全市污灌区的土壤和小麦进行了采样，在对该区土壤—小麦系统中六种重金属元素(Cd、Cu、Pb、Zn、Cr和Ni)的含量进行检测的基础上，本文首先分析评价了污灌区农田土壤的环境质量总体已达到了轻度污染水平，主要的污染因子是Cd和Zn，同时对污灌区农田土壤分区县、土壤类型和不同灌水类型进行了评价；然后分析了重金属在小麦不同部位的含量与富集能力，评价了污灌区旱地作物小麦普遍遭受了Cd的污染，只有个别样点遭受了Zn的污染；最后对土壤—小麦系统重金属含量间以及植物富集系数与土壤部分理化性质间进行了相关分析，由于土壤类型是定性变量，本论文以数量化理论建立了小麦穗实中重金属含量与土壤中重金属全量、土壤类型、PH值、有机质和全盐量间的预测模型，经复相关系数检验，污灌区主要的污染因子Cd和Zn的预测精度最高，模型可以成立。

Boundary value problems in classical hydrodynamics are usually transformed from the physical plane to velocity plane by hodograph method.

在古典水动力学中，对於二维、稳态、不可压缩、无旋流场且不考虑其他外力影响之平面射流问题，常用速度矢端图法将其由物理平面转换至速度平面，再以复变函数法求得平面射流问题之自由流线参数方程式，但其求解过程甚为繁复。

The ability of corrosion inhibition and synergistic effect of water treatment agent of sodium humate with Zn(superscript 2+) and sodium gluconate were studied through dynamic experiments.

通过动态旋转挂片实验，研究了水处理剂腐植酸钠的缓蚀性能以及与Zn(上标2+)和葡萄糖酸钠复配的缓蚀协同效应。

Prediction method of long-term statistics of hydrometeor -induced cross-polari{ation is very important in designing satellite communication frequency re-use systems above 10 GHz utilizing orthogonal polarizations.

水凝物的交叉极化预报模式对10GHz以上频段使用正交极化频率复用的卫星通信系统设计具有重要意义。

The distributed array system based on various multiplexing technology is the current trend of research on optic fiber hydrophone.

采用多路复用技术的分布式阵列则是光纤水听器应用研究的发展方向。

Jeff needed to get it back, so he had to put his hand into the ice-covered water.

杰夫需要拿背面给它，因此他必须将他的手放入冰复盖的水。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。