“上向单臂板信号机”的概念、定义、翻译、参考文献-科学参考

单词	上向单臂板信号机
释义	上向单臂板信号机 upper quadrant single-arm semaphore signal
随便看	seed source seed sowing seed sowing device seed sowing machine seed spacing seed spacing drill seeds per pod seed spot seed spout seed stalk seed stand seed station seed stem seed sterilization seed stock seed stock production seed storing seed strand planter seed stripper seed supply can seeds visibly weathered or poor in quality seeds volume-weight seed system seed temperature seed-test

科学参考收录了1248194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。