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Methods: The PP/porous PTFE/PP composite electret film was prepared with porous PTFE,polyethylene and PP by heat melting technique.The charge storage stability of the electret film and transportation were evaluated by using the methods of isothermal surface potential attenuation and open-circuit thermally stimulated discharge current spectra.

利用热融法将多孔PTFE、聚乙烯和PP制备成PP/多孔PTFE/PP复合膜驻极体，利用等效表面电位衰减和开路热刺激放电电流谱方法研究PP/多孔PTFE/PP驻极体的电荷储存稳定性及其输运规律。

Methods: The PP/porous PTFE/PP composite electret film was prepared with porous PTF'E, polyethylene and PP by heat melting technique. The charge storage stability of the electret film and transportation were evaluated by using the methods of isothermal surface potential attenuation and open-circuit thermally stimulated discharge current spectra.

利用热融法将多孔FTFE、聚乙烯和PP制备成PP/多孔PTFE/PP复合膜驻极体，利用等效表面电位衰减和开路热刺激放电电流谱方法研究PP/多孔PTFE/PP驻极体的电荷储存稳定性及其输运规律。

The characteristics of charge storage in APCVD Si 3N 4/thermal\|grown SiO 2 double layers electret films, charged by coroma were investigated by measurements of isothermal surface potential decay and thermally stimulated discharge.

利用等温表面电位衰减及热刺激放电(thermallystimulateddischarge ，TSD)方法探讨了恒栅压电晕充电经常压化学气相沉积的Si基Si3N4 和热生长SiO2 双层薄膜驻极体电荷的存储特性。

Membrane distillation, which is being developed for desalination and concentration of thermally labile substances, is a relatively new separation technique.

膜蒸馏是一种新型的膜分离技术，可用于海水和苦咸水淡化、热敏物质的浓缩等诸多方面。

In developing such devices, thermally stable, low-resistance ohmic contacts with good surface morphologies are essential.

在开发器件过程中，制备热稳定性强、接触电阻低、表面形貌良好的欧姆接触是关键工艺步骤之一。

Two bulk magnons are observed. One is the thermally excited magnon and another is the uniform magne-tostatic mode.

此实验观测到了两种体波性质的磁振子，一个是热激发的自旋波，另一个被确认为静磁模。

Phase separation (nonsolvent induced phase separation,spreading solution on water surface and so on),melt stretch,thermally induced phase separation are included.

重点介绍了聚4–甲基–1–戊烯微孔膜各种制备方法的原理、过程、影响因素和膜的结构特点。

It is well known that the prerequisite for an organometallic compound to be useful in EL devices is that it must be thermally stable and photoluminescent.

我们知道有机金属配合物应用于电致发光器件中的先决条件是热稳定性和良好的光致发光性能。

The balanced pressure duplex phosphor bronze diaphragm is a highly sensitive modulating unit thermally programmed to provide accurate steam conserving operation.

平衡压力双磷青铜隔膜是一种热程序高敏感性调节装置，具有精确的蒸汽保存功能。

This part introduce microporous zeolite compounds , especially the zeolite-like compounds which were developed by Yaghi et al by using thermally stable aromatic polyacid and metal ions as second building unit .

这部分介绍了微孔的类分子筛化合物，特别是 Yaghi 等利用刚性和热稳性本身比较好的芳香多酸和多碱配体和金属离子作为建筑单元发展的的第三代类分子筛，即：金属—有机框架。

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