查询词典 electrets

The surface potential build-up with constant current corona charging for polypropyrene electrets was investigated.

本文讨论了聚丙烯驻极体恒流电晕充电期间电荷的建立。

UV radiation had little effect on quasi-static piezoelectric coefficient d33 of porous PTFE electrets.

2医用紫外线辐照对多孔PTFE的准静态压电系数d33的影响甚微。

After joint venture, big capital will be input to realize technical reform in larger scale and to achieve the production capacity of 600 million electrets per year.

为使产品继续保持国内先进、国际一流的水平，公司拟定2005年同国外电子投资商合资，合资后以较大的投入，实现较大规模的技术改造，达到年产驻极体6亿只的能力。

The cause of the influence is discussed in connection with the structure and the theoretic model of the cellular piezoelectric film electrets, and its dynamic characteristic of spac...

结果表明，合理地优化充电参数，能使这类呈闭合孔洞的聚合物蜂窝膜驻极体的压电性及其稳定性得以改善，为拓宽这类新型压电功能膜应用领域，推动其产业化进程提供了一定的理论和技术依据。

Methods: After 48 h action of -300 V and -500 V electrets in 3T3 cells, CaCl2, A23187, EDTA were added in proper order to 3T3 cells. The levels of intracellular Ca2+ and the cell number of apoptosis were detected with flow cytometry.

选用-300 V和-500 V 驻极体作用3T3细胞48 h，即时依次加入CaCl2、A23187、EDTA，通过流式细胞术检测细胞内Ca2+浓度的变化和3T3细胞的凋亡量。

This paper reports SiO2/Si3N4 double layer electrets both prepared by PECVD on glass substrates with Cr/Au lower electrode.

本文研究了在带有Cr/Au电极的玻璃衬底上利用PECVD制备的SiO2/Si3N4双层膜驻极体性能。

The electrets properties of homemade ZPKI PI films were studied by comparing with Kapton PI films supplied by Dupont.

通过和杜邦公司产KaptonH商品膜驻极体性能比较，系统研究了由国产ZPKI型聚酰亚胺前体溶液制备薄膜的驻极体性能。

Based on the basic law of electrostatics and the boundary-value problems of Poisson equation, two opposite thoughts of the study that electrets can either be designed to provide homogeneous electric fields or be designed to shield electric fields are discussed.

利用驻极体具有的可任意切割、拼装、黏接的特性，从静电学的基本规律及由泊松方程构成的静电边值问题出发，对驻极体既可对外提供电场又可设计为屏蔽电场的 2个相异思维的研究结果展开了讨论，从而，从理论上指出驻极体既可以制成提供均匀外场的材料又可以制成一种透气性静电屏蔽材料。

The -300V and -500V electrets were applied on 3T3 cells for 24 and 48h, respectively, then the surface charge density on 3T3 cells and the intracellular free Ca2+ concentration and the number of apoptosis were measured by means of cell electrophoresis and flow cytometry method, respectively.

利用Fluo—3/AM Ca2+指示剂，采用流式细胞术测定3T3细胞内钙离子浓度的变化和3T3细胞的凋亡量，探讨驻极体诱导3T3细胞凋亡与细胞表面电荷密度和游离钙浓度变化之间的关系。

The influence of charging parameters (such as charging voltage, charging time and charging temperature, etc.) on piezoelectricity and its thermal stability of cellular polypropylene film electrets was studied by means of contact charging and constant voltage corona charging methods and the thermal stimulated discharge technique.

通过接触法充电、恒压电晕充电，以及开路热刺激放电技术，对充电参数(例如充电电压，充电时间和充电温度等)对聚丙烯蜂窝膜驻极体的压电性及其热稳定性的影响的研究，并从孔洞型薄膜压电体的材料结构和理论模型出发，讨论了这些参数对其影响的原因，分析了与压电活性密切相关的空间电荷的动态特性。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了