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服务等级
auto.
service class
avia.
service grade
;
quality of service
busin.
grade of services
commun.
grade of service
(质量)
IT
grade of service
tech.
class of service
telecom.
tier
道路的
服务等级
tech.
service level
服务等级
:
16 phrases
in 8 subjects
Aviation
3
Corporate governance
1
Electronics
5
Information technology
2
International trade
1
Multimedia
1
Space
1
Telecommunications
2
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