electrets造句

• 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
• 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
• 4 . unidirectional electrets mic and hifi loud-speaker . 5 . voice adjustable and with prevention on feedback . 6 . digital display of the channels
  11.具有数码显示通道，收听通道和发送通道分别可调由数码管直观的显示出来