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

单词	primary measurement standard
释义	primary measurement standard Encyclopedia 工学测量标准释 primary measurement standard原级测量标准使用原级参考测量程序或约定选用的一种人造物品建立的测量标准。简称原级标准（primary standard）。
随便看	neutral density disc neutral [density] filter neutral density filter neutral detergent fiber neutral differential equation neutral earthing device of hydro-generator neutral element neutral equation neutral equilibrium neutral field neutral field line neutral filter neutral fixed-point neutral flame neutral form neutral fragment loss scanning neutral gas neutral grey filter neutral grounding method of low-voltage distribution networks neutral gyroscope neutral helium neutral hydrogen neutral hydrogen distribution neutral hydrogen region neutral hydrogen zone

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