passive tag meaning in English

无源标签

Semi - passive tag
半无源电子标签
Research on impact of metal media on rfid passive tag and design method of metal - surface - usable rfid tag
被动标签读取效能的影响及可用于金属表面标签的设计
10 1db gain rf output choices , users can choose active or passive tag according to the practical need
10个1db增量rf输出选择，使用户可根据需要选用有源标签或无源标签
Passive tags do n ' t haven a power supply but a minute electrical current by an incoming radio frequency provides enough power for the tag to send a response
无源标签并无电源，由外来的无线电频提供微电流，为标签提供足够电力以作回应。