粉末冶金标准
powder metallurgy standards
高硅铝合金标准样品
high-silicon aluminum alloy standard sample
镍铬合金标准物质
certified reference material of nickel-chromium alloy
无金标准
Absence of the gold standard
Absence of gold standard
absence of a gold standard
diagnostic test
冶金标准化与质量
metallurgical standardization & quality
标准相对光效曲线
standard relative luminous efficiency curve
标准相关
canonical autocurrelation
标准相关分解
canonical correlation decomposition
the canonical correlation decomposition
canonical correction decomposition
CCD
Cgd