信号: signal; semaphore; gun示踪器: tracer示踪器: carbon tracer; tracer示踪器示踪物: tracer电子示踪器: electronic tracer高度示踪器: height tracer高示踪器: high tracer热示踪器: heat tracer线条示踪器: bar tracer放射线示踪器: radioactive indicator放射性示踪器: radioactive inaicator; radioactive tracer辐射性示踪器: radioactive tracer臂板信号示象: arm signal aspect调车信号示象: shunt signal aspect机车信号示象: cab signal aspect组合信号示象: combination signal aspect信号跟踪器: signal tracer电子曲线示踪器: electronic curve tracer微型红外示踪器: miniinfraredtracer眼p32示踪器研究: p32 tracer study of eye打信号示意停下: signal to to stop打信号示意要转弯: signal that one is going to turn/which way one is going to turn第一位信号示象: toaspect闪光信号示象[显示: flashing signal aspect视频信号示波器: video frequency oscilloscope
