electret motor

例句：

1. 1.The new electret motor is more efficient than the old one.
   新型静电马达比旧的更高效。
2. 2.The electret motor is used in many applications, such as air conditioning and heating systems.
   静电马达被用于许多应用，如空调和供暖系统。
3. 3. The electret motor has a low noise level and high reliability, making it suitable for use in sensitive environments.
   静电马达具有低噪音水平和高可靠性，使其适用于敏感环境的使用。