一个名叫“桑普卡车”的小装置会敲击地面，引起的细微地面震动又再传输到无线传感器上。
They are designed to pick up the echo of the seismic vibrations created by contraptions called "thumper trucks" pounding the ground.
洛克希德马丁公司展示了康宏主动安全技术(科协)及其自动化传感器和两个TARDEC 2.5吨的卡车执行器套件系统。
Lockheed Martin demonstrated the Convoy Active Safety Technology (CAST) system along with its AutoMate sensor and actuator kit on two TARDEC 2.5-ton trucks.
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