“恒有度级”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	恒有度级
释义	恒有度级 constancy class
随便看	mechanical drive system mechanical drive turbine mechanical dust collector mechanical dust extractor mechanical dysmenorrhea mechanical effect mechanical efficiency mechanical egg gatherer mechanical egg washer mechanical electroterminal mechanical elevator mechanical (end face) seal mechanical energy mechanical engineer mechanical engineering mechanical engineering (建筑中的采暖通风空调等) mechanical entropion mechanical equation of state mechanical equilibrium condition mechanical equivalent mechanical equivalent of heat mechanical equivalent of light mechanical equivalent of light (单位：瓦/流明) mechanical erosion mechanical excitation