a类 meaning in Chinese

category a

Specification of class a amendments and class b amendments
指明a类修订及b类修订
Class a and class b amendments to approved development proposals
对核准发展计划作出a类及b类修订
Specification for ceramic parts , type a
A类瓷件技术条件
Category a - general system development and maintenance services
A类一般电脑应用系统的发展及维修服务；
Type a 3a fuse not break for testing 90 minutes at fire temperature of 1000
A类火焰温度1000试验90分钟3a保险丝不断

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