10. When double and multi-U-tube ground heat exchangers are used, heat transfers of the system decreases due to the thermal disturbance among the tubes.
双管和多管布置时，由于管间的热干扰作用，系统的换热量将不同程度降低。
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11. The ground heat exchanger is an important component of the ground Coupled heat Pump (GCHP) and the U-tube is most commonly used ground heat exchanger.
地下换热器是地源热泵的重要组成部分，竖直u型管是最常见的地下换热器形式。
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12. The design and research of the paper has certain reference value to shell-and-tube heat exchanger especially U-tube heat exchanger engineering design.
本文的设计与研究对于管壳式换热器尤其是U形管式换热器的工程设计具有一定的参考价值。
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13. Analyses the effect of U-tube diameter, tube quantity in each hole, and the design inlet water temperature of a heat pump unit on the heat exchange capability.
分析了U形管管径、单孔内u形管数量及热泵机组设计进水温度对换热器换热效果的影响。
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14. Ground heat exchanger is an important component of the ground Coupled heat Pump (GCHP) system and a single U-tube is the most common type of ground heat exchanger.
地下换热器是地源热泵系统重要的组成部分，单u型管是当前广泛使用的地下换热器形式。
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15. The dynamic response of the U-tube flow manometer is analyzed in the paper. Firslyt, the simplified mathematical model of the U-tube flow manometer is established.
对U形管流体压强计的动态特性进行分析，首先建立了U形管流体压强计的简化数学模型。
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16. A description is made of the structural characteristics of the new-type U-tube heat exchanger, and an introduction is given to its use in the crude methanol system.
阐述了新型U形管换热器的结构特点，介绍了该种换热器在粗甲醇系统中的应用情况。
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17. To use two passive U-tube anti-rolling tanks with different natural frequencies can provide very good rolling reduction over a wide range of metacentric height of ship.
使用两个具有不同固有频率的被动式U型减摇水舱能给横稳心高变化范围很宽的船舶提供很好的减摇效果。
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18. Base on several common U-tube heat transfer models of ground source heat pump, this paper proposes a transient heat transfer model for single U-tube vertical heat exchanger.
介绍了几种常见土壤源热泵u型埋管换热器传热模型，建立了单u型垂直埋管换热器的非稳态传热模型。
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19. The research findings and conclusions would play an important guidance role in design of the U-tube anti-rolling tank system and simulation of the test rolling analog table.
本论文的研究成果和结论对于U型减摇水舱的设计及试验台架的仿真具有重要的指导意义。
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20. The device has these features that temperature acquisition, accurate heating time, timely cooling etc; it provides the high level automation device to steel U-tube solution treatment.
21. For natural circulation, it is shown that parallel flow in the tubes of vertically inverted U-tube team generator (UTSG) can be non-uniform, and reverse flow occurs within some tubes.
22. The frequent cracking in U-tube heat exchanger caused by corrosion at Lanzhou Petrochemical Corporation were analyzed in terms of materials, running conditions, overhaul operation etc.
23. This paper analyzed the energy consumption of a system in operation status——the double U-tubes vertically buried tube ground-source heat pump system in an air force station of Chongqing.
基于重庆市某空军场站的双U管竖埋式土壤源热泵系统工程，对该系统冬季变工况下的运行能耗进行了分析。
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24. The influences of groundwater advection to heat transfer process and different soil property to the soil temperature field around the single U-tubeunderground heat exchanger were analyzed.
25. The precision of liquid column manometer was described. The correct use method and error correction of Utube manometer and double tube differential pressure gauge were analysed.
叙述了液柱式压力计的精度，对U形管压力计和双管差压计的正确使用方法及误差修正做了简要分析。
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26. The cracking causes of a U shaped tube heat exchanger were analysed in material compositions, microstructure, properties with the help of optional microscope and SEM.
借助光学和扫描电子显微镜，从材料成分、微观组织和性能角度，分析了U形管换热器开裂原因。
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27. This paper studied the influence on instabilities of U type tube with different placement experimentally and theoretically.
从实验和理论两方面研究了不同布置方式对加热U型管不稳定性的影响。
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28. In some patients with complicated and severe strictures, intrahepatic biliary stenting and flushing by Utube after biliary plasty procedure were employed for 3~6 months.
其中病变复杂、狭窄严重的病例，经胆管狭窄整形修复、肝肠吻合口内置U管支架引流，术后3～6个月拔除。
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29. A part that operates by sliding, as the U-shaped section of tube on a trombone that is moved to produce various tones.
型滑管：靠滑动操作的部分，如长号上u型的管子部分，拉动它可以产生各种声调。
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30. A part that operates by sliding, as the U-shaped section of tube on a trombone that is moved to produce various tones.
