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agric. 标准物质材料
avia. 参考资料
chem. 参考材料
el. 标准样品; 基准物质
met. 标准试样
scient. 手册
space ★ 标准物质
tech. 参比物质; 标准材料; 基准材料
water.res., ecol. 参考物质
reference material
: 43 phrases in 9 subjects
Aviation4
Chemistry20
Earth sciences3
Electronics2
Geophysics1
Nuclear physics1
Space4
Technology7
United Nations1

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