“disk signal”的概念、定义、翻译、参考文献-科学参考

单词	disk signal
释义	disk signal [¦disk ¦sig·nǝl] ^{CIVIL ENGINEERING} Automatic block signal with colored disks that indicate train movements.
随便看	Eumycophyta Eumycota Eunicea Eunicidae Eunomia eunuch Euomphalacea eupavarine eupelagic Eupelmidae Euphausiacea euphenics Eupheterochlorina Euphorbiaceae Euphorbiales euphotic Euphrosinidae Euphrosyne Euplexoptera euploid eupnea Eupodidae Euproopacea Europa Europe

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