passive infrared system [红外] 被动红外系统 ; 被动式红外系统
passive infrared sensor 无源红外传感器 ; 被动式红外传感器 ; 无源红别传感器
passive infrared detection 被动红外探测
Passive Infrared Detector 测器 ; 被动红外探测器 ; 红外探测器 ; 被动式红外探测器
passive infrared equipment 被动式红外装置
passive infrared homing head 被动式红外自动导向头
passive infrared decoy 被动红外假目标
Passive infrared detectors 探测器
passive infrared guidance systems 无源红外线导引系统
Passive infrared penetration is poor, the human body easily block the infrared radiation not be receiving probe.
被动红外穿透力差，人体的红外辐射容易被遮挡，不易被探头接收。
Alarm systems - Intrusion and hold-up systems - Part 2-4: requirements for combined passive infrared and microwave detectors.
警报系统。入侵和滞留系统。第2 - 4部分：组合无源红外和微波探测器的要求。
The origin passive infrared detectors is easily jammed by factors such as environmental temperature and environmental light intensity.
传统被动红外探测器容易受到环境温度，环境光线强度影响，误报率高。
应用推荐