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Standard method
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Standard Light Sources
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Standard Light Sources
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Standard Light Sources
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飞达光学网... ... standard lens 标准镜头
standard light sources
标准光源
standard luminosity function 标准发光度函数 ...
例句：
1
Standard
light
sources
fail
(
open
filament
etc
)
?
标准
光源
失效
（
灯丝
开路
等
）
2
Comparisons between
radiometric
scales
on
UV
-
VUV
radiant
standard
light
sources
紫外
-
真空
紫
外
辐射
标准
光源
的
比
对
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Standard Light SourcesStandard Light SourcesStandard Light Sources