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standard reference material
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chem.
标准参考物质
(SRM)
;
标准物质
(SRM)
el.
标准参照材料
geophys.
标准参考【照】物
space
标准参考材料
tech.
标准物质
;
标准参照样
standard reference material
:
4 phrases
in 3 subjects
Chemistry
1
Earth sciences
2
United Nations
1
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