无源无线 meaning in Chinese

reflector antenna

Compared with traditional sensors , the saw sensors can be used for wireless passive sensing with no need for a separate power supply , which makes it possible to measure parameters of fast moving or rotating objects . in addition , wireless passive sensing in extreme environment likes strong electromagnetic interference and low temperature becomes obtainable
与传统传感器相比，其最大优势在于它能实现无源无线遥测，这使得它能运用在诸如快速移动物体、旋转体等无接触测量中，并且在强电磁干扰、低温等极端工作条件下也能正常工作。