In the work of Provincial training of Primary and Middle School Core Teachers, it is the key to ensure the training quality for the trainers to do a solid piece of work for each stage.
在中小学骨干教师省级培训工作中，培训者切实做好各个阶段的工作是保证培训质量的关键。
Based on the principle of micro displacement of piezoelectric ceramic, the research on the precise actuator technique is presented, which is used for precise positioning work piece stage.
以压电陶瓷微位移原理为基础，对精密驱动技术在精密定位工件台上的应用作了实验研究。
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