Design on using electrets to provide homogeneous electric fields or shield electric fields 利用驻极体提供均匀外场和屏蔽外场的设计
Design of heart sound processing analog circuit based on the electret capacitor microphone 基于驻极体电容传声器的心音模拟处理电路的设计
Influence of thickness on charge storage and dynamic properties of non - polar film electrets 厚度对非极性聚合物薄膜驻极体电荷储存及电荷动态特性的影响
Influence of chemical surface treatment on charge storage stability for miniature si3n4 sio2 electret film 化学表面处理对微型化的氮氧化硅驻极体层电荷储存性能的影响
It specilizes in manufacture of carious circyle receiver , electret receiver and accessories of various telecommunication product 专业生产各种动圈受话器、驻极体话筒及多种通信产品配件。
It also gives a safety design problem analysis using an electret capacitor microphone to pick - up the heart sound signals 该电路涉及到放大、滤波、电平抬升等电路,并给出了安全设计问题,利用驻极体电容传声器来拾取心音信号。
While the compressed electret micromotor adopt top - drive structure , the output torque of it is larger than that of side - drive structure 扁平驻极体微电机采用项驱动型结构设计,此结构电动机的输出转矩比侧驱动型静电电动机要大。
This kind of hepa filter can reduces pressure loss from two aspects . on the one hand , it chooses melt - blown tiny polypropylene electret filtration medium 它主要从两方面来降低高效过滤器的阻力:一是选用了熔喷型超细聚丙烯驻极体滤料。