反向折射剖面测勘
reversed refraction profiling
沿线折射剖面测勘
in-line refraction profiling
浅层地震剖面测线
high-resolution seismic survey
地面反向积放式输送链
floor inverted power and free conveyor chain
电池极性反向测试
Incorrect Battery Installation tests
反向反射观测
reverse reflection observation
RRO