head of water meaning in English
水头
水位差
Examples
- The head of water is maintained at a permanent level so that the velocity and curve of the jets remain constant
水头被维护在一个永久水平以便喷气机的速度和曲线依然是恒定。 - The models are compact and reliable operation , high in average efficiency . it is applicable to the head of water , and the power station which have great load changes
该机型结构紧凑，运行可靠，平均效率高，适用于水头及负荷变化较大的电站。 - New zhengzhan machine co . , ltd locate the chinese stone material produces base china . head of water , is a to be engaged in to produce a business enterprise of high - tech development that each kind of stone material processes the equipments exclusively
正展机械有限公司，位于中国石材生产基地中国.水头，是一家专门从事生产各类石材加工设备的高科技研发型企业。 - A scheme to be formulated and submitted for approval to the harbour commissioners for the exploitation of white coal hydraulic power , obtained by hydroelectric plant at peak of tide at dublin bar or at head of water at poulaphouca or powerscourt or catchment basins of main streams for the economic production of 500 , 000 w . h . p . of electricity
有个建造水力发电厂的计划：利用都柏林沙洲的满潮噗啦呋咔272或鲍尔斯考特瀑布273的水位差主要河流的流域来开发白煤水力发电，经济生产五十万水马力的电力。拟好后，将提交港湾委员会，以便获得批准。 - In this article , through lab and engineering site trials that the physical data of new type pipe materials is corrected , the results are as follow : ( l ) the expansion coefficient of new plastic pipe materials is more large than that of iron pipe . ( 2 ) new plastic pipe materials have different heat - resisting character and according to the water temperature to choose pipe materials ; ( 3 ) the loss of head of water for new type pipe materials is more smaller than iron pipe and also correct the loss of head of water that calculated by theory ; ( 4 ) probing into the press - resistance character of new plastic pipe materials
本文通过试验室试验及工程现场试验，对新型给排水管材的几个重要的物理性能参数进行实验测定，纠正了以往的错误认识。研究结果表明： ( 1 )新型塑料管材线胀系数远远大于钢管和铸铁管，设计和施工中要严格考虑管道的伸缩； ( 2 )新型塑料管材耐高温性能各不相同，需根据管内水温选定管材； ( 3 )新型管材水头损失远小于钢管，并对原水头损失计算公式进行了修正； ( 4 )对于塑料管材的耐压性能进行了探讨。