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）。

The advantages of phase change material are elaborated.

阐述了相变材料储能装置的优点。

Phase Change Materials (PCM) is a high thermal storage substance.

相变材料是一种高效的贮热物质。

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。

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。

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。

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。

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。

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。

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。

The research progress of microencapsulated phase change material suspensions is introduced.

介绍了微胶囊相变悬浮液的研究进展。

But it has the problems of phase segregation and supercooling during the phase change process.

但硫酸钠水合盐在相变蓄热过程中，存在相分离，过冷等问题。

Differential thermal analysis did not reveal the ammonium perchlorate phase change from rhombic to cubic.

差热分析没有测出过氯酸铵从正交晶向立方晶的相变。

This program is a useful analysis tool for the design and optimization for a phase change thermal storage.

该模型及计算程序为相变储热器的设计和优化提供了有利的分析工具。

The recent research progress of preparation technology on organic phase change materials (PCM) is reviewed.

综述了有机相变材料在制备技术方面的研究进展。

Polyethylene glycol (PEG) is a kind of phase change materials with high enthalpy and low thermal hysteresis.

聚乙二醇相变材料是一类相变焓较高、热滞后效应低的储能材料。

In other words, this triggers a phase change in which wealth suddenly becomes more equally distributed (or vice versa).

也就是说，这样做会引发财富分配突然变得均匀的相变(phase change)。

Based on volume averaging theory, natural convection model for melting phase change in porous media was established.

根据体积平均理论，建立多孔介质中融化相变过程自然对流模型。

Phase change microcapsule was prepared by melamine-formaldehyde resin and n-octadecane through in-situ polymerization.

采用原位聚合法用三聚氰胺-甲醛树脂包覆正十八烷，制备出相变微胶囊。

A kind of composite phase change heat storage is introduced in this paper, including its working principles and structures.

介绍了一种复合相变蓄热器的工作原理和结构形式，提出了应用中所存在的问题。

However, if exposed to heated air, the phase change from liquid to gas is more intense, and produces an efficiency of 70 percent.

然而如果该过程中加入热空气，相变过程就会加剧，达到70%的效率。

According to decalescence and discharge heat of phase change, single dimension passes heat theory model of phase change was created.

根据相变材料的吸热和放热特点，建立了相变材料的一维传热理论模型。

Should GEO600 detect a phase change, it could be indicative of a slight change in distance, thus the passage of a gravitational wave.

如果GEO600探测到位移，那就说明发生了距离的微变，而这很可能是重力波的通过引起的。

In this paper, optimization of phase change parameter and hardening parameter of closed hierarchical single surface model is studied.

对封闭型分级单屈服面模型参数中的阶段改变参数和硬化参数的优化进行了研究。

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。

Microencapsulated phase change materials, a new kinds of composite phase change materials, was prepared with microencapsulation technology.

微胶囊相变材料是将微胶囊技术应用于相变材料而形成的新型复合相变材料。

Dislocation and plastic deformation was produced in crystal material under shock loading. phase change could occur when shock loading was strong.

在冲击加载下，晶体材料中产生了位错和塑性变形。在强冲击时还可出现相变变化。

Theoretic calculation and relative test are carried out against the rotor vertical and horizontal signal phase change rule during rotor running up.

针对转子在变速过程中垂直和水平信号相位及其差值变化规律进行了理论计算和相关试验。

The characteristics of microencapsulated phase change material, the phase change mechanism and its application to thermal storage field are introduced.

介绍了微胶囊相变材料的特点、相变机理及在储热领域的应用，展望了微胶囊相变材料的发展前景。

Material phase change and thermally induced phase separation of materials are controlled by controlling the spray head and working chamber temperatures.

通过对喷头温度和成形室温度的控制，实现了对材料的相变和热致相分离过程的控制。