“downstairs”的概念、定义、翻译、参考文献-科学参考

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。

单词	downstairs
释义	downstairs 楼下
随便看	normally closed normally closed auxiliary contact normally-closed contact normally closed contactor normally closed interlock normally closed (NC) normally closed push button switch normally closed valve normally deenergized relay normally deenergized stick relay normally distributed observations normally energized relay normally energized stick relay normally engaged gear normally engaged gear lock ring normally functioning normally insulated container normally off normally on normally open circuit normally open contact normally open contactor normally opened contact normally open interlock normally open push button switch