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长时间
 长 时间
tech. long duration
 长时间
gen. long-duration; tract
| 回波
 回波
bridg.constr. echo wave
geophys. backward wave
met. anacamptic sound; bounce; echo
space return

to phrases
长时间 cháng shíjiān
gen. long-duration; tract
长时间距离 cháng shíjiān
auto. long
持续时间
tech. long duration
长时间: 351 phrases in 58 subjects
Advertising1
Agriculture1
Animal husbandry6
Artificial intelligence1
Automobiles14
Aviation16
Basketball1
Bridge card game1
British usage, not spelling1
Business13
China2
Commerce5
Construction1
Cryptography1
Dentistry13
Earth sciences7
Economy16
Electronics41
Exhibitions3
Explosives and Explosive Ordnance Disposal6
Figure skating1
Football2
General48
Genetics1
Geophysics7
Handball1
Hydroelectric power stations1
Informal3
Logistics1
Management2
Mathematics1
Metallurgy14
Mining1
Nanotechnology2
Nuclear and fusion power2
Nuclear physics2
Oil / petroleum3
Otorhinolaryngology1
Planning1
Plastics1
Polymers2
Project management3
Rail transport2
Remote sensing1
Rowing2
Securities4
Shipbuilding1
Space14
Sports14
Technology46
Telecommunications6
Tennis1
Textile industry2
United Nations1
United States1
Watchmaking1
Wind Energy4
Wrestling1