“density secondary standard device”的概念、定义、翻译、参考文献-科学参考

单词	density secondary standard device
释义	density secondary standard device Encyclopedia 工学密度计量技术释 density secondary standard device密度副基准装置用于传递密度量值的主要计量器具。
随便看	Narratology narratology narrow narrow-angle astrometry narrow-area species of Chinese materia medica narrow band narrow-band filter narrow bandgap semiconductors narrow band imaging endoscopy narrow band light narrow-band light narrow-band magnitude narrow band monochrome photography narrow band noise narrow-band photometer narrow-band photometry narrow-band radar scanner narrow-band radar signal narrow band semiconductor narrow-band semiconductor narrowband signal narrow-band width narrow-beam radiation narrow body aircraft narrow channel effect

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