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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This paper discusses events log, the semantics of parameter contexts, then presents a event detecting model-event tree model efficiently under the parameter of recent context.

本文讨论了事件日志、参数上下文，然后在最近环境参数上下文的语义条件下给出了一种高效的事件监测模型事件树模型。

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Because of requiring no speed detecting devices, this method is effective, simple and practical conception for the electrical parameter measurement of sensorless vector control system.

该方法不需要速度检测元件，从而为无速度传感器矢量控制系统的电气参数测试提供了一种有效、可行的方案。

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