“approach signal”的概念、定义、翻译、参考文献-科学参考

单词	approach signal
释义	approach signal [ǝ`prōch ´sig·nǝl] ^{CIVIL ENGINEERING} A railway signal warning an engineer of a signal ahead that displays a restrictive indication.
随便看	flexural rigidity flexural slip flexural strength flexure flexure theory flicker flicker control flicker effect flicker fusion flicker photometer flight flight briefing flight characteristic flight control system flight conveyor flight deck flight dynamics flight envelope flighter flight feather flight feeder flight forecast flight inspection flight instrument flight level

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。