“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	proportional integral derivative regulator proportional integral derivative regulatory systems proportional integral regulator proportional-integral regulatory systems proportional intensification proportional-intergral-dervative control proportionality proportionality coefficient proportionality factor proportional limit proportional loading proportionally cutting circle proportional mean proportional navigation proportional numbers proportional odds model proportional odds regression model proportional part proportional plus integral plus derivative control proportional plus integral plus differential control proportional-plus-integral-plus-differential control proportional price rule proportional profile proportional region proportional regulator

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