The invention relates to a remote warding method which comprises the steps that: the physiological parameter of a person under guardianship is detected by a physiological parameter detecting device;
一种远程监护方法，包括如下步骤：通过生理参数检测装置检测被监护人的生理参数；
Freon sensor with high sensitivity is key device for detecting freon leak. The manufacture technology, sensitivity mechanism, measure method and parameter of samples have beendiscribed in this paper.
高灵敏度的氟里昂气体传感器是检测氟里昂泄漏的关键元件，本文叙述了氟里昂气敏器件的制作工艺、敏感原理、测试方法及测试结果。
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