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two-element [ˌtuː'εlɪmənt]
gen.	二元的; 双元件的
avia.	双元件

two element : 53 phrases in 17 subjects

Air defense	2
Automatic control	1
Automobiles	2
Aviation	2
Biotechnology	2
Bridge construction	1
Business	3
Earth sciences	1
Electric machinery	3
Electronics	11
General	1
Genetics	1
Information technology	1
Physics	1
Rail transport	1
Space	2
Technology	18