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expansion devices
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  膨胀装置
     A Comparative Study on Irreversible Loss of Three Kinds of Expansion Devices
     三种膨胀装置不可逆损失的比较
短句来源
  “expansion devices”译为未确定词的双语例句
     Effect of expansion devices on the dynamic charactristics of an air-source heat pump during the reverse-cycle defrost period
     节流机构对风冷热泵逆循环除霜性能的影响
短句来源
     Based on investigation on the bridge expansion devices in Shanxi province the causes of faults are analyzed, which contain the problems of design, construction, maintenance and nature condition. At the same time corresponding measures are proposed to ensure the usual service of expansion device to prolong service life and reduce maintenance cost.
     通过对山西省桥梁伸缩缝装置的普查 ,分析造成病害的原因主要有设计、施工、养护、自然条件几方面 ,制定出相应措施 ,确保了桥梁伸缩缝装置的正常工作 ,延长桥梁的使用寿命 ,降低养护成本
短句来源
     The influence of the expansion device on the reverse cycle defrost performance in an air-to-water heat pump was investigated experimentally. Experiments were conducted on a 55 kW unitary air-to-water heat pump. A copper tube with an outer diameter of 22 mm and the thermal expansion valve (TEV) were used as the expansion devices for the defrost cycle respectively.
     为研究不同节流机构对逆循环除霜时间的影响,分别用一根外径为22mm的旁通铜管和热力膨胀阀作为除霜时的节流机构,在一台名义制冷量为55kW的风冷热泵冷热水机组上进行了实验研究,结果表明:旁通铜管系统与热力膨胀阀系统对比,总的除霜时间减少了40s,其中融霜时间减少了34s,排水时间减少了10s;
短句来源
  相似匹配句对
     Two Solutions of Embedded Devices' Serial Port Expansion
     嵌入式设备串口扩展的两种解决方案
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     On the Expansion of Employment
     扩大就业的思路分析
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     On the Earth expansion
     地球膨胀说提出、发展及其主要事实依据
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     Molecular devices
     分子器件的研究进展
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     Display Devices
     显示设备
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  expansion devices
Capillary tube expansion devices are widely used in refrigeration equipment; nevertheless, the mechanism of the flow is still not fully described and understood, so the experimental verification of most predictions is still necessary.
      
The use of expansion devices and rockers usually eliminates the problems caused by thermal expansion and contraction in long bridges.
      
Pressure gauges were addedh el'ore and after the refrigerant expansion devices for upstream and downstream pressure measurements.
      
In severe situations this powder can circulate through the system, dramatically increase wear on compressors and block expansion devices.
      
Its simplicity is the most important reason to continue using it instead of other expansion devices.
      


The linear expansion coefficient of two kinds of inorganic adhesives, copper phosphate adhesive and the same adhesive added 10% Al_2O_3, Cr_2O_3 as filler has been measured with thermo-expansion device. It has been found that the main tendency of inorganic adhesives from ambient temperature to 720℃ was volume contraction, compared with DTA-TG curve, it was found that the high sheath interink strength of copper phosphate resulted from the force of chemical bond, interacting molecule and mechanical...

The linear expansion coefficient of two kinds of inorganic adhesives, copper phosphate adhesive and the same adhesive added 10% Al_2O_3, Cr_2O_3 as filler has been measured with thermo-expansion device. It has been found that the main tendency of inorganic adhesives from ambient temperature to 720℃ was volume contraction, compared with DTA-TG curve, it was found that the high sheath interink strength of copper phosphate resulted from the force of chemical bond, interacting molecule and mechanical interlink formed in adhering processing. Some information can be found in this thesis for higher adhesive strength of copper phosphate adhesive.

——用热澎胀仅测定磷酸铜无机胶和加入10%的Al_2O_3、Cr_2O_3填料的两种磷酸铜无机胶的线膨胀系数。得出常温至720℃条件下,无机胶主要倾向是体积收缩。对照差热—热重曲线,得出了磷酸铜无机胶套接强度高的原因是在粘接过程中形成的化学键力、分子间力和机械咬合作用。

Short tube orifices have been widely used as a expansion device on automotive.residential sized air conditioners and heat pump system. Very little data are available on how any of the new replacement refrigerants will perform in short tube orifices relative to conventional refrigerants. This paper submitted two-phase flow investigution of new replacement refrigerant R134a through short tube orifices.Performance and parameter variations of short tube orifices for pure R134a are studied at wide operating...

Short tube orifices have been widely used as a expansion device on automotive.residential sized air conditioners and heat pump system. Very little data are available on how any of the new replacement refrigerants will perform in short tube orifices relative to conventional refrigerants. This paper submitted two-phase flow investigution of new replacement refrigerant R134a through short tube orifices.Performance and parameter variations of short tube orifices for pure R134a are studied at wide operating conditions. The two-phase and subcooling flow performances were tested for L/D ratios from 7 to 20, for condensing temperature range from 35℃ to 54℃, for subcooling as high as 13.9℃ and for qualities as high as 10% at the inlet of the short tube. The refrigerant flow characteristics through short tabe orifices depend on the upstream subcooling, upstream pressure, downstream pressure , short tube diameter and length.

短管机构在汽车空调、家用空调和热泵系统中得到越来越广泛的应用。目前,关于提供通过短管机构CFC替代物性能研究方面的数据很少。本文给出了CFC替代物R134a通过短管机构的流动特性试验研究。在很宽的操作条件下,通过试验研究了R134a流过短管机构的性能参数变化。长径比在7~20范围内,冷凝温度为35℃~54℃时,过冷度可达13.9℃,短管入口干度可达10%左右。对进入短管的两相流和过冷液体性能进行了测试,可以看出,通过短管机构的制冷剂流动性质取决于上游过冷度、上游压力、下游压力、短管直径和长度。

In our country bridge technical standards and engineering quality test evaluation standards,bridge expansion device hasn′t be stipulated specifically.By analysing and discussing on usage capacity of bridge expansion device and development process,the paper gives advanced technology,rational economy of expansion device,which can widely used in bridge expansion joints.

我国桥梁技术规范及工程质量检验评定标准中,对桥梁伸缩装置未作具体技术指标规定。拟通过各种代表性桥梁伸缩装置使用性能分析和发展过程的论述,说明浅埋式型钢伸缩装置技术先进,经济合理,应该在桥梁伸缩缝中广泛应用。

 
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