水源

The villagers' water source is from the river, with plentiful of salmons.

村民唯一的水源是临近的清澈河流。

Some cases will be used to verify the method. It will be the theoretic basis and technical support for protecting the rinking groundwater wellfields, and lead the way for quantificationally delineating protection zones.

结合实例对该研究方法进行检验与应用，为饮用地下水源地的保护提供定量的科学依据与技术支撑，对饮用水地下水源保护区的划分起到示范作用。

Torrents of men, sources and rills of the Northwest are you indeed

这人的急流，（难道你们真的永不枯竭，西南部的水源和山溪？

In this article, the feasibility of sewage reusing and its situation are discussed.

在这种情况下，污水回用便成为一种稳定、可靠、经济的水源。

Moreover, Abel was the best shot in the Troop, a real sharpshooter who could pick out the eye of a squirrel at seventy-five yards, and, too, he knew all about living outdoors, building fires in the rain, tracking animals and finding water.

而且艾布尔是&营&里最好的射击手，一杆真正的&神枪&，他能够在75码外瞄准一只松鼠的眼睛，也熟悉野外生活，会在雨地里生火，会捕捉野兽，会寻找水源。

Poverty, due to shrinking herd sizes, is driving thousands of pastoral families throughout east and west Africa to fence off the rangelands to practice rain-fed agriculture and, where water is available, dry-season gardening.

牧群规模缩小所引起的贫困使非洲东部和西部地区数以千计的游牧家庭不得不将牧场土地划分出来从事雨养农业，或者在有水源供给的地方从事旱季农艺。

Calculates the maximum heating radiuses of seawater-source heat pump district heating systems under different indexes of HER'.

经计算，当热水供回水温差为10℃，海水源热泵区域供热系统的HER'指标分别控制在5%，10%，15%，20%时，系统的最大供热半径应分别为0.875，2.75，4.625，6.5km。

On the basis of analyzing the thermodynamic properties and cycle performance of pure refrigerants, the paper optimizes their concentration while screening NARMs used in wide variable-temperature heat source. The practical applications of NARMs, such as R22/R123, R123/R125 etc., are studied in geothermal heat pump, seawater heat pump, air dehumidification system and dual-evaporator domestic refrigerator. The results show that the NARMs can match the limitation of a pinch point at the air-side exit of heat exchanger, reduce the unreasonable heat transfer temperature difference, and improve the COP of system. The above conclusion is proved by measuring the cycle performance of R12, MP39 and R11/R22 in a two-evaporator experimental system.

其次，本文在工质热物性和变工况循环性能分析基础上，筛选和优化了适应外部大变温热源约束条件的非共沸混合工质及其浓度配比；讨论了相变温差较大的非共沸混合工质（如R22/R123、R123/R125等）在地热源供热热泵、海水源供热热泵、双门冰箱和热泵空气除湿的应用，计算分析表明制冷与热泵系统采用相变温差较大的非共沸混合工质有利于弱化传热过程的&窄点&的约束，减小传热过程中的不合理温差，提高系统COP值；通过建立双蒸发温度循环系统试验装置，对R12、R22/R11和R22/R152a/R124循环性能进行实验研究，结果与理论分析一致。

Restrict fluid return pump pipe water into play not only the function.

限制水泵管内液体返回水源，起着只进不出的功能。

Today we can assist you with a range of plungers, wellhead equipment, controllers and automation products that are designed with the end user in mind.

今天我们可以提供您大量的气举，水源设备，控制器和自动化产品。

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。