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Terms for subject Information technology containing service class | all forms | in specified order only
| English | Chinese |
| class of service | 服务级别 |
| class of service database | 服务数据库类 |
| data class of service | 业务的数据种类 |
| user class of service | 用户服务级别 |
| user service class | 用户服务类 |