21. The principle of electret condenser microphone and its noise are analyzed in the paper. It will be helpful to improve the electric specification.
本文对驻极体电容传声器的原理及噪声作了分析，这将有助于提高它的电特性。
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22. The rule of the shift of the mean charge depth at different environmental humidity was discussed for this electret material by heat pulse method.
利用热脉冲技术研究了不同湿度下电晕充电的聚酰亚胺薄膜沉积电荷平均深度向背电极的迁移规律。
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23. The oriented, polarized material of liquid crystal polymer can be used as a piezoelectric material, electret material, nonlinear optical element.
热电液晶聚合物还可用作压电、驻极体、非线性光学元件等。
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24. With the environment quality being required more and more, multiple attentions were paid to the studying on filter material of electret nonwovens.
随着人们对环境质量的要求越来越高，驻极体非织造布过滤材料的研究倍受关注。
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25. The results show that the charge storage stability of film electret increases remarkably in high humidity surroundings after chemical surface modification.
实验结果表明，经过化学表面修正后，驻极体薄膜在高湿环境中的电荷储存稳定性显著提高；
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26. This article approaches the problems of surface of electret films, i. e. defect states and absorbed states on the surface of an electret affecting its properties.
探讨了驻极体薄膜的表面缺陷态和表面吸附态如何影响驻极体的性能问题。
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27. Theoretical evaluation and simulation experiments show that the improved BP neural network can effectively detect the image feature of electret condenser microphone.
理论分析和实验均表明该算法能实时有效地检测出驻极体麦克图像的特性。
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28. It is found that the charge stability of ETFE electret is very good, and the stability of negatively charged ETFE is much better than that of positively charged ETFE.
29. The USX800-HC condenser version features an electret condenser capsule to provide smooth response and exceptional clarity - perfect for clear, crisp vocal projection.
在USX800 -慧聪冷凝器版本提供驻极体囊，以提供顺畅的反应和出色的清晰度-清晰，脆声投影完美。
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30. The USX800-HC condenser version features an electret condenser capsule to provide smooth response and exceptional clarity - perfect for clear, crisp vocal projection.
