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分子系数
avia.
numerator coef
分 子系数:
32 phrases
in 16 subjects
Agriculture
4
Aviation
2
Chemistry
3
Earth sciences
1
Electronics
2
Engineering geology
1
Finances
1
General
1
Geophysics
1
Mechanics
1
Metallurgy
2
Oil / petroleum
1
Rail transport
1
Securities
1
Space
1
Technology
9
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