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黑带 hēidài
el.mach.	black band
taekwondo.	black belt
tech.	blackband
telecom.	black tape
光栅上的黑带 hēidài
telecom.	blanking bar

黑带: 108 phrases in 28 subjects

Agriculture	5
Animal husbandry	1
Biology	9
Chemistry	1
Construction	1
Dermatology	1
Desert science	11
Earth sciences	3
Ecology	1
Economy	1
Electric machinery	5
Engineering geology	1
Entomology	2
General	15
Geology	1
Ichthyology	2
Judo	1
Latin	4
Metallurgy	3
Navigation	1
Oil / petroleum	1
Otorhinolaryngology	1
Soil science	2
Sports	2
Technology	16
Telecommunications	1
Textile industry	15
Watchmaking	1