“primary standard of length”的概念、定义、翻译、参考文献-科学参考

单词	primary standard of length
释义	primary standard of length Encyclopedia 工学米定义释 primary standard of length长度计量基准以现代科学技术所能达到的最高准确度保存和复现长度单位“米”的整套装备。
随便看	bold conjecture Bold Style of Non-dramatic Songs in the Yuan Dynasty Bo Le bolero Bole's Classics on Veterinary Acupuncture Bole Shi Boleslaus I Bolesłav I Bolesłav Ⅲ Bolesław Prus boletus of the steppes Boley Meadow Bolgarskiǐ Bolgatanga Boli boliang forms Bolibrukh bolide bolie Boli National Forest Park Bolivar Coastal Fields Bolivarian Alliance for the People of Our America Bolivarianism Bolivia Bolivian Art

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。