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universal constants
chem. 普适常数
universal constant
hydroel.st. 通用常数
metrol. 基本物理常量; 普适常量; 普适常数〔恒量〕
polym. 普适常数
universal constants: 19 phrases in 9 subjects
Agriculture1
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Engineering geology1
General2
Metallurgy1
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Technology8
Wind Energy1

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