查询词典 phase change

The result shows that it's successful to prepare the phase change composite material and it is 3_dimension meshy nano_composite and it has favorable heat capacity. It can be used in the application of solar energy and some other applications.

结果表明，该复合材料是三维网络状纳米材料，而且具有良好的蓄热能力，可用于太阳能利用等方面

There is abrupt phase change in nonsinusoidal waves modulation. It can easily produce impulse current and bring large difficulty to high-power emission system; so it is not beneficial to holding the orthogonality between the orthogonal pulses and demodulating information.

非正弦波调制信号存在相位突变，在工程实践中易产生较大的冲击电流，给大功率发射系统带来较大困难；而且相位不连续也不利于保持正交脉冲间的正交性，不利于信息的正确解调。

Palmitic acid-silicon dioxide nano-composite phase change material was prepared by sol-gel process from tetraethyi orthosilicate and palmitic acid.

采用溶胶—凝胶法，以正硅酸乙酯和棕榈酸为主原料，制备了一种有机—无机纳米复合相变材料。

Starting with the crystal optics theory, the phase change, generated by photoelastic effect, is derived.

详细研究了相位调制型波导传感器的传感机理，分析了应力应变效应和温度应变效应引起的相位变化机理。

Molecular mechanism for phase change of cell cycle has been studied in budding yeast, human cultured cells and procreant cells.

通过酵母、人培养细胞和生殖细胞三个系统研究了细胞周期时相驱动的分子机制。

T. LOUIS, Mo., Sep 4,2008---SAFC Hitech focus area within SAFC a member of the Sigma-Aldrich Group (NASDAQ: SIAL), today announced that it has made significant progress in developing Germanium Antimony Telluride precursors for use in high volume manufacturing phase change memory applications.

AFC Hitech宣布锗-锑-碲材料(GexSbyTez或GST)的开发取得重大进展，GST前驱体用于批量生产相变存储器。

Nowadays, energy crisis is a world problem which has to solve. The technology of phase change for heat storage is signality for energy source allocation.

能源危机是当今世界迫于解决的问题，相变储热技术对于能源的合理配置意义重大。

The objective in this study is to reduce the aggregate phenomenon of SiO2-sol and improve the storage/release thermal properties of the composite phase change materials. Silicane coupling agent was used to modify the SiO2sol during preparing CPCMs by sol-gel method.

为改善溶胶－凝胶法复合相变材料过程中硅溶胶易团聚的问题，采用硅烷偶联剂对SiO2溶胶进行改性，提升复合相变材料的热储、放性能。

A new heat storage material (CH3COONa·3H2O) with a phase change temperature of 55℃ and a sub-cooling temperature of less than 2℃ was developed. This sodium acetate trihydrate based material was obtained by a number of experiments for selecting proper nucleation catalysts and suspension mediums.

以三水醋酸钠(CH3COONa·3H2O)为蓄热基质，通过大量实验，遴选合适的抗沉淀剂和成核剂，配成相变温度约55℃、过冷度小于2℃的蓄热材料。

Engineering thermophysics; Sodium acetate trihydrate; Supercooling; Phase change; Temperature curve for step cooling

工程热物理；三水醋酸钠；过冷；相变；步冷温度曲线

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐