五: five单位: unit电码: code自动: voluntarily; of one's own ac ...五单位码自动发报机: five unit code automatic transmitter五单位电码: five level code自动发报机: automatic sender; automatic tra mitter; automatic transmitter自动发报机头: autohead五单位电传电码: five unit teletype code五单位电码印字机: five unit printer惠斯登自动发报机: wheatstone transmitter双机头自动发报机: double-head automatic transmitter纸带自动发报机: beltscanner电动发报机: motor transmitter电码发报机: code transmitter长凿孔带自动发报机: beltscanner电码自动闭塞: automatic block with coded track circuit; coded automatic block11单位电码: eleven unit code八单位电码: eight unit code三单位电码: three-unit十单位电码: ten unit code五单位制电码: five level code; five unit code; five-unit code自动发报: automatic telegraph transmission; automatic transmission带降落伞的紧急自动发报机: crash beacon五单位电报码纸带: five track telegraphic coded tape; five-track telegraphic coded tape