“valve-closing”的概念、定义、翻译、参考文献-科学参考

单词	valve-closing
释义	valve-closing 气门关闭
随便看	service delay service demand factor service department allocated cost variance service department budget service department cost service department expenses service desk service diagram service discharge service discipline serviced land service door service drawing service drop service dynamo service economy service efficiency service element service elevator service engine service engineer service engineering service entrance service equipment service establishments

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。