题目内容

什么是压电传感器？它有何特点？其主要用途是什么？

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简述什么是压电效应？什么是逆压电效应？试举例说明。

Finish the exercises on specific verbs and their use in context.A. The following are verbs of specific manners of motion. Match the specific verbs with the adverbs that describe the manners. Refer to a dictionary if needed. The first one has been done for you as an example.

超声波传感器主要有哪几种类型？试叙述其工作原理。

试解释霍尔式位移传感器的输出电压与位移成正比的关系。