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时区时间
avia.	zone time (给定时区的当地时间，地球被人为地分为24个时区，每15°为一个时区，标准的时区子午线从格林尼治开始以15°的倍数递加,所有时区两侧经线边界为标准子午线东西两侧各7. 5。每个时区的当地平均时间 (LMT )为其标准子午线的时间，每个时区的当地平均时间不同于格林尼治平时，相差一些时间)
tech.	zone time

时 区时 间 : 59 phrases in 24 subjects

Advertising	1
Automobiles	2
Aviation	4
Clothing	1
Communications	1
Computer numerical control	1
Earth sciences	1
Economy	1
Electronics	10
Explosives and Explosive Ordnance Disposal	1
General	4
Information technology	1
International trade	1
Logistics	1
Management	1
Nuclear physics	1
Oil / petroleum	2
Project management	1
Rail transport	2
Securities	2
Space	4
Technology	12
Telecommunications	2
Wind Energy	2