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to phrases
unsaturated hydrocarbons
auto.
不饱和烃
unsaturated hydrocarbon
oil
不饱和烃
tech.
不饱和碳氢化合物
unsaturated hydrocarbons
:
15 phrases
in 5 subjects
Chemistry
3
Geology
1
Oil / petroleum
5
Oil processing plants
1
Technology
5
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