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Terms for subject Communications containing all-automatic | all forms
EnglishChinese
all-relay semi-automatic block system继电半自动闭塞系统
double-track all-relay semi-automatic block system双线继电半自动闭塞
multiple-track all-relay semi-automatic block复线继电半自动闭塞
single-track all-relay semi-automatic block单线继电半自动闭塞

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