1·The 98% pure Heneicosane(C21H44) was used as the phase change material(PCM).
采用纯度为98%的正21烷（C21H44）作为相变材料（PCM）。
2·The advantages of phase change material are elaborated.
阐述了相变材料储能装置的优点。
3·Phase Change Materials (PCM) is a high thermal storage substance.
相变材料是一种高效的贮热物质。
4·Solid liquid phase change latent thermal storage is commonly used.
固液相变潜热蓄热是通常采用的蓄热方式。
5·The mechanism forming solid - solid phase change material was examined.
探讨了该固-固相转变材料形成的机理。
6·Phase change heat pump water heater is a new style equipment for hot water supply.
相变式储能热泵热水器是一种新型节能热水供应设备。
7·In this paper, we propose a Phase Change Material (PCM) for the temperature control.
在本文中，我们计划使用相变材料(PCM)作为温度控制材料。
8·Level detection circuit, phase change detection circuit, and optical disk apparatus.
电平检测电路，相变检测电路，以及光盘装置。
9·Convection without phase change can be divided into free convection and forced convection.
无相变的对流换热分为自由对流及强迫对流二个方面。
10·The void enlarges heat resistance, and then affects the phase change heat transfer process.
空穴的存在增大了热阻，从而影响相变换热过程。
1·The 98% pure Heneicosane(C21H44) was used as the phase change material(PCM).
采用纯度为98%的正21烷（C21H44）作为相变材料（PCM）。
2·The changes of transmission electron diffraction patterns indicate the phase change has occurred at about 220k, and its crystal parameters change obviously.
透射电子衍射花样的变化表明在220k附近发生了相变，它的晶体结构参数明显地变化。
3·You need a functional form that connects the value at one state of matter, the freezing point of water to another phase change, the boiling point of water.
你需要一个函数形式来，连接物质某个态对应的温度值，如水的冰点，和另一个相变，如水的沸点。
4·The pressure melting process of phase change material (the ice) around a horizontal elliptical cylinder with finite length is studied.
本文研究相变材料(冰)围绕水平椭圆柱，在有限长接触时的压力熔化过程。
5·The advantages of phase change material are elaborated.
阐述了相变材料储能装置的优点。