讨论了激光微推力器需要解决的几个关键技术问题。
The several key technologies of laser micro-thruster are discussed as well.
四极子量子级联微腔激光器带来的光的方向性激射，解决了对称型微腔激光器光的方向性激射的困难。
Directional emission of light guided by quadrupolar-shaped quantum cascade microcavity lasers solves the difficulty about the directional emission of symmetrical microcavity lasers.
针对压电陶瓷微位移执行器动态响应速度慢的问题进行了研究，提出用数字PID方法加以解决，并研制出一套实用控制系统。
The problem of slow step response in electrostrictive actuator is studied and a digital PID method is proposed to compensate the slow step response.
应用推荐