单项选择题

A、FFT Microstrain/Locater Sensors(包括激光收发模块Includes laser transceiver module)
B、FFT Microstrain/Locater Sensors(包括激光收发模块Includes laser transceiver module)
C、专用Locater DAQ信号处理板等专门装置Dedicated Locater DAQ signal processing board and other specialized devices
D、专利技术proprietary technology