
 TCC drives HJ,UJ,LJ and LUJ respectively to control the lighting of block signal. The lightingcontrol principle is shown in Figure C. 1.Figure C. 1 Lighting Principle of Block Signal (共 182 字) [阅读本文] >>
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 TCC drives HJ,UJ,LJ and LUJ respectively to control the lighting of block signal. The lightingcontrol principle is shown in Figure C. 1.Figure C. 1 Lighting Principle of Block Signal (共 182 字) [阅读本文] >>
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