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automatic block between stations
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automatic block between stations
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铁路区间闭塞
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automatic block between stations
自动站间闭塞
列车凭出站信号显示作为发车凭证,列车发车后,出站信号机自动关闭,当列车完整到达接车站后,站间闭塞自动解除的行车管理技术。
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biomedical metallic materials
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biomedical polyamino acid
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biomedical polymeric materials
biomedical polymer materials
biomedical polyolefin
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biomedical polyphosphazene
biomedical polysiloxane
biomedical polysulfone
biomedical poly(tetrafluoroethylene)
biomedical polyvinyl acetate
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