说明：  此文件为PIC资料，主要是传感器敏感元件的介绍，包含传感器的概述，敏感元器件与传感器，传感器的动态与静态特性，传感器的材料，实用传感器应用，传感器的接口电路，变送器和测试装置等
(This file is PIC, the main sensor is introduced, including the overview of sensor sensitive components and sensors, sensor, dynamic and static characteristics, sensor materials, practical application of sensor, sensor interface circuit, transmitter and test device)