Which use MQ-2 combustible gas sensor-type semiconductor sensors to achieve smoke smoke detection, high sensitivity, fast response, strong anti-interference, etc, and the price low, long service life.
其中选用MQ-2型半导体可燃气体敏感元件烟雾传感器实现烟雾的检测，具有灵敏度高、响应快、抗干扰能力强等优点，而且价格低廉，使用寿命长。
PA is the world's recognized as a simple, convenient method of detection and diagnosis of HIV infection, the price is also more expensive.
PA是世界上公认的一种简单、方便检测诊断HIV感染的方法，价格也比较昂贵。
This text passed the method of substantial evidence to carry on a research detection: System factor, win a label rate and can circulate a new an amount to publish price to all suppress the influence.
本文通过实证的方法进行了研究发现：制度因素、中签率、可流通新股数量和新股发行价均对发行抑价有着非常显著的影响。
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