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活化度
oil
activation grade
space
degree of activation
tech.
activity
活化度:
34 phrases
in 14 subjects
Agriculture
7
Animal husbandry
1
Automobiles
1
Chemistry
1
Earth sciences
2
Ecology
1
Electronics
2
General
3
Metallurgy
3
Oil / petroleum
1
Oil processing plants
1
Space
2
Technology
8
Water resources
1
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