“semi-automatic block”的概念、定义、翻译、参考文献-科学参考

单词	semi-automatic block
释义	semi-automatic block Encyclopedia 工学铁路区间闭塞释 semi-automatic block半自动闭塞人工确认相邻两铁路车站间区间线路空闲、办理和解除闭塞，自动开放、关闭出发信号机的闭塞方式。
随便看	Qit Bhuratart Qitian Ling Qi Tieyan Qitoushan qi transformation qi tumor Qiu Qiubei Xian Qiu Chi Qiu Chong Qiu Chuji Qiuci Qiu Dingfan Qiu Dongping Qiu Fengjia Qiu Fu Qiu Futang Qiu Gangjian Qiu Guanzhou qiuhou Qiu Hu Teased His Wife Qiu Jicai Qiu Jicun Qiu Jin Qiu Jin's Jingweishi manuscript

科学参考收录了854744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。