查询词典 irrigation engineer

The forecast of irrigation water volume playa an important role in the irrigation management.

灌溉用水量的预测对灌区的灌溉管理起着重要的作用。

In this paper, hydraulic performance tests on two sprinklers under different conditions are conducted. The two sprinklers are widely used for gardens irrigation in China, named model R50 of Rainbird Company and model PGP of Hunter company. On account of the sprinkler's structure, preliminary analysis on the tested data is also made. Based on the tested data, some advice on the best choice and layout of the sprinkler in irrigation design is presented.

文中对国内目前应用最多的两种园林灌溉喷头——美国Rainbird公司的R50型及Hunter公司的PGP型喷头作了不同工况下的水力性能测试，并结合喷头的结构对测试数据进行初步分析；在水力性能测试结果的基础上，对园林灌溉系统设计中喷头的合理选用与布置提出了几点建议。

This study was conducted in Taiyuan sewage irrigation area from 1997 to 2000.The research process included field investigation, sampling, lab test, model experiment and data analysis by geo-statistics method. The source, affecting factors, content condition, transference regularity, spatial distribution of heavy metal in sewage irrigation area were studied. The results showed that mercury, cadmium and lead contents of soil were higher than soil background value.

本文以在中国北方具有代表性的太原污水灌溉区为研究对象，污灌区位于山西省中部的太原盆地北端，总面积2.7万公顷，在研究区共布土样点49个，粮食作物样33个，水样点26个，大气样点6个，通过实地调查取样监测和室内模拟试验，采用地统计学和多元统计等方法，系统研究了污灌区土壤-作物系统中重金属Hg、Cd、Pb的来源、含量状况、累积影响因素、空间分布特征、迁移转化规律、重金属环境容量的区域分异与应用等内容。

Based on the tentatively study on vaporing drift loss of spray irrigation in Maowusu sandlot we draw a conclusion that wind speed and the relative humidity of air are the important factors to influnce loss of spray irrigation in there .

对毛乌素沙地喷灌条件下蒸发漂移损失进行了试验研究，经数据分析，得出风速和空气相对湿度是影响当地灌水损失的重要因素，当风速

Based on the tentatively study on vaporing-drift loss of spray irrigation in Maowusu sandlot,we draw a conclusion that wind speed and the relative humidity of air are the important factors to influnce loss of spray irrigation in there.

近年来，喷灌技术已成为解决干旱与半干旱地区缺水问题的重要节水技术措施。作为衡量喷灌工程可行性与有效性的重要指标，喷洒水利用系数也受到研究者的广泛关注。

As one of the key elements in small irrigation systems, self-priming pumps are widely used in agricultural irrigation.

中文摘要：自吸泵广泛应用于农业灌溉，是轻小型喷灌机的重要组件之一。

The relationship between relative yield and relative water use is formulated,based on these data, a optimal irrigation scheduling under sprinkling irrigation condition can be made or the lower level of soil moisture in different growing stage might be teken as the indicator for the scheduling irrifgation in winter wheat.

喷灌条件下土壤水分、硝态氮空间变异特征研究：应用地统计学理论，以半方差函数为工具分析不同灌溉制度下，土壤含水率(0～60cm)和土壤中硝态氮在相应深度的空间分布，用各类模型拟合半方差图，在此基础上应用普通克立格技术估算未知点的土壤含水率，使用最优内插值法绘制土壤含水率和硝态氮在田间的空间分布等值线图。

At last, we compare and analyze WUE under different water supply methods and different water treatments. It indicates WUE of subirrigation is higher than traditional irrigation, so subirrigation is a water-saving irrigation method.

最后，本文比较分析了苗期冬小麦在各种水分处理条件下的土壤水分利用效率，结果表明浸润灌溉条件下的水分利用效率要高于地面灌溉，所以用浸润灌溉方式，可以节约水分，提高水的经济价值。

Subsurface drip irrigation is one of effective irrigation methods. But it is easy to clog.

地下滴灌是一种高效的节水灌溉技术，但系统易于堵塞，堵塞问题成为影响地下滴灌成败的关键。

Subsurface irrigation, also called sub-irrigation, can be considered as a controlled drainage system.

地下灌溉可以看作是一个有控制的排水系统。

Continuously improve the production mechanism, to provide customers with better quality products and services.

不断的完善生产机制，给客户提供更优质的产品及服务。

B:Yes, he was the very prize-winner in the court tennis ten years ago?

是的，他是十年前的世界网球冠军。