相比而言，市区内的水管单位及其下属的公共供水设施似乎在使用量和损耗量上比重占得不大。
His urban counterparts, and the utilities that serve them, may seem unimportant in terms of the amounts of water they use and lose.
水管堵漏就是好的开始：漏水水管使中东和亚洲的大城市水流失量达60%。
Plugging leaky pipes would be a start: they cause some big cities in the Middle East and Asia lose up to 60% of their water.
本文主要研究混流泵出口环量对泵出水管道水力特性的影响。
The influence of outlet circulation of mixed-flow pump on the hydraulic performance of the outlet pipe was studied in this dissertation.
水轮机在偏离最优工况运行时，水流的环量会使尾水管中心产生低压并形成涡带。
In case of the turbine is operated departing the optimum condition, the low presure and the vortex band will be established in the draft tube centre by the flow circulation.
将水管或铅管装置充满水或气，而后观察量压器，以查出漏水处。
Filled pipes or plumbing fixtures with water or air and observes pressure gauges to detect and locate leaks.
为安装水管所进行的渠道开挖的工程量所用的计算规则条目，与为排水渠所开挖的工程量是相同的。
For example trench excavation for plumbing pipes are governed by the same rules of measurement as trench excavation for drain pipes.
果实中氨基酸总量与含氮量、肥水管理有关。
The total content of amino acid in fruits was related to nitrogen content and fertilizer and water management.
地下水位的变化是地下水资源量多寡最直接的表现形式，是地下水管理最重要的控制性指标。
The variation of groundwater table is the main manifestation of groundwater resources amount, and it is also the most important control indicator.
在大量管井施工及运行调查的基础上，提出了我国新的供水管井井水含砂量标准。
Current situation of well Water sand content standards inside and outside China is outlined here and some differences and arguments for this issue are studied. Based on the great amount o...
在大量管井施工及运行调查的基础上，提出了我国新的供水管井井水含砂量标准。
Current situation of well Water sand content standards inside and outside China is outlined here and some differences and arguments for this issue are studied. Based on the great amount o...
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