“block signal system”的概念、定义、翻译、参考文献-科学参考

单词	block signal system
释义	block signal system [`bläk `sig·nǝl ´sis·tǝm] ^{CONTROL SYSTEMS} An automatic railroad traffic control system in which the track is sectionalized into electrical circuits to detect the presence of trains, engines, or cars.
随便看	Diplorhina diplosome diplospondyly diplotene Diplura dipmeter dipmeter log dip mold dip needle Dipneumonomorphae Dipneusti Dipnoi dipnone Dipodidae dip of horizon dip oil dipolar gas dipolar ion dipole dipole anisotropy dipole antenna dipole-dipole force dipole disk feed dipole moment dipole polarization

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