灌区

Critical levels of external and internal cadinium exposure resulting in impaired uriniferous tubule funcfion of women and its relation to urine cadmium low molecular albuminuria and other biochemical indexes were proposed based of study on health effects of environmental cadmium pollution to residents living in Zhangshi irrigation area in several years.

本文根据张士灌区镉的环境污染对居民健康影响的多年研究，提出了镉的内、外暴露水平和对人群肾小管损伤的＂临界值＂以及镉与尿低分子蛋白等多项生化指标的健康效应关系，并通过超＂临界值＂频率和接触归因危险性评价提出了环境慢性镉危害早期判断标准的初步建议。

These indicate that both soil and water in this irrigation area are in the process of progressively desalinized.

那么，灌区水土盐量演化走势究竟若何，在盐化还是在淡化，抑或稳定在一定的水平上。

In order to improve nitrogen use efficiency and to reduce environmental pollution from excessive nitrogen application, soil nitrate-N content and accumulation in intercropped legume-maize under 0 and 225kghm^(-2) application were investigated in the Hexi Corridor of Gansu Province.

为提高氮肥利用效率，减少过量施用氮肥对环境造成的污染，本文以甘肃省河西灌区为试验地点，在0和225kghm^(-2)氮水平下，探讨了蚕豆、豌豆、大豆3种豆科作物与玉米间作对土壤硝态氮累积和分布的影响。

In irrigated agriculture, canal system and soil types have an important impact on land use change.

对于理解和揭示灌区土地利用变化的原因和机制具有积极意义。

Ecological water requirement is one of the important components of regional water requirement, and is a base for sustainable development of irrigated region.

生态需水是区域需水的重要组成部分，灌区生态需水是维持灌溉农业持续发展的基础。

Until recently, however, the research of the accumulation of heavy metals in large irrigated areas is not systematic and whole.

但是，到目前为止，对北京市大范围的污灌区土壤重金属积累的情况仍缺乏系统、全面的研究。

By lucubrating balance of the overall volume of water resources in Shuangta Irrigation area of Hexi aisle,it supplies a sufficient basis for establishing scientific management mechanism and reasonable exploitation and utilization of water resources.

通过河西走廊双塔灌区水资源总量均衡的深入研究，提出了为建立科学的管理机制和合理开发利用水资源的建议。

It adopts the method of statistical analysis of historical materials, calculation of theory, calculation of analogy test to research the water-saving measure of what Dengkou irrigated area hands over the water right to China Electricity.

本文在全面研究水权理论、国家有关政策、法规、国内外水权转换的动态等的基础上，采取历史资料统计分析，理论计算，类比试验计算等方法，对镫口灌区向华电水权转换的节水措施等进行了研究。

Aqueduct Bridge is a sort of structure on stilts by transporting water spanning river, valley, billabong and road etc, it also can drainage floodwater and diversion excepting water transfer, it is the most abroad across building applied in the middle of irrigated area water project construction, not only quantity is great but also technology is complicated.

渡槽是一种输送渠水跨越河渠、山谷、洼地和道路等架空建筑物，除了输水外还可排洪水、导流等之用，是灌区水工建筑物中应用最广泛的一种交叉建筑物，不仅数量大，而且技术复杂。

Border irrigation is a new kind of surface irrigation technique derived from the irrigation practice in the irrigation district in northern China.

小畦灌是我国北方一些灌区从灌溉实践中摸索出来的一种新型地面灌水技术。

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。