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to phrases
类集 lèijí
space generic set
stat. grouping of observation
类 集
: 55 phrases in 26 subjects
Agriculture2
Animal husbandry1
Artificial intelligence1
Automobiles1
Aviation2
Biology1
Business1
Chess1
China1
Ecology1
Economy1
Electronics3
Environment2
General4
Information technology1
Logistics1
Nursing1
Oil / petroleum3
Polymers1
Shipbuilding1
Sports1
Statistics1
Technology17
Telecommunications2
United Nations3
Water resources1

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