At present all the products made in our country based on mechanics balanced principle and analogue electronic technology.
目前，我国自行生产的都是采用力平衡原理的机械式和模拟电子技术的产品。
I have deeper understanding of electric and electronic technology, digital and analogue circuits, and PLC.
对电力电子技术，数模电路以及PLC相关知识有比较深的认识。
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