水源

Because distribution of annual rainfall amount year by year,are cruelly nonuniform,soil water resources are basically important on the growth and development of plants.

土壤水是重要的生态水源和水文要素之一，黄土高原位于干旱半干旱地区，降水量的年际变化大和季节分配极不均匀，土壤水资源对植物生长发育的影响尤为重要。

Siemens supplied infrastructure that brings rapid mass transit, cleaner air and water for Shanghai.

例如，西门子提供的基础设施将为上海带来更便捷的交通以及更清洁的空气和水源。

According to the United Nations, 95% of the world's cities still dump raw sewage into their water supplies .

据联合国宣称，世界上95%的城市仍然在向他们的水源倾倒下水道垃圾。

The steps of Reduced Gradient optimal method is used on solving the Least Squares theory model. At some situation, some nodes pressure and supply of all water-supply sources are measured in Xi'ning (resistance parameter of all pipes are known). By using the pressure of the experiment and optimal measure points, the state simulation is done respectively to get all nodes' pressure.

利用简约梯度优化法求解给水管网状态估计的最小二乘数学模型，实测某一工况下西宁市配水管网部分节点水压H_0、各水源供水量分别用优化选择的测压点水压和按经验选择的测压点水压估计所有节点的水压，对西宁市配水管网进行了状态估计。

Economic evaluation models are developed for different disaster areas through regression analysis of the statistic data collect...

应用该模型分析天津市控制超采地下水的经济效益及利用南水北调工程供水作为替代水源的经济可行性。

The protection object is in the partial moist subtropical evergreen broad-leaved forest, relict species and habitats in which wild animals, while the role of forest water conservation research tasks.

保护对象为中亚热带偏湿性常绿阔叶林、孑遗树种及栖息其中的野生动物，另有森林涵养水源作用的研究任务。

A new type of light weight and small size machine with sprinkling irrigation and hose irrigation was introduced. The machine's set of remotion and pressure water are provided by a capstan car, and sprinkling irrigation by a sprinkler car.

介绍了一种新型喷灌和软管灌溉两用轻小机组的结构和工作原理，该新型灌溉机组由绞盘车提供行走动力和压力水源，通过喷水车进行喷洒灌溉。

Miyun reservior is the most primary water supply source in Beijing, water and soil loss in the upper reaches has important influence on ecological safety in capital area.

密云水库是北京市最主要的供水水源，上游地区的水土流失对于首都地区的生态安全具有重要影响。

And the African resurrection plant has sugars called trehaloses that allow it to dry to a crisp during droughts and then flourish again.

此外，非洲的更苏植物中含有一种名叫海藻糖的糖，使这种植物可以在旱季变干变脆，在水源充足后，可以重新繁茂生长。

TWT's two thousand various products are widely used in hydraulic generations,city plumbing ,wastewater treatment facilities,petroleum and chemical industries ,heating supplies ,and any other water related business.Among them,Water butterfly valves,DB flange butterfly valves and Tri-eccentric compound ring metal seated butterfly valves won the State New Products awards in 1994,2000,and 2001,respectively. The butterfly valve series carryings the "TWT" brand name was selected for the Famous Brand Product of Tianjin Award by the Tianjin government .

上述产品广泛应用于水源工程、城市给排水、污水处理、发电、石油、化工、供热、船舶、医药、冶金等行业管路系统中作为截流和调节设备使用，其中对夹式蝶阀、DB型法兰蝶阀、三偏心复合圈金属密封蝶阀、软密封明杆闸阀分别被评为1994年度、2000、2001、2002年度国家级新产品，"TWT"牌系列蝶阀被天津市政府授予"天津市名牌产品"、"外地市场受欢迎的天津产品"称号。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。