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load duration
el.	带负荷持续时间; 负载持续时间
tech.	荷载持续时间; 荷载历时

load-duration : 38 phrases in 13 subjects

Bridge construction	3
Business	1
Earth sciences	1
Electric machinery	1
Electricity	2
Electronics	8
Hydroelectric power stations	1
Metallurgy	1
Oil / petroleum	1
Refrigeration	1
Scientific	2
Technology	15
Water resources	1