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- PG等级performance grade (PG)
- 高温PG等级High temperature PG grade
- 等级grade
- 等级制度hierarchy
- 国家计算机等级考试the national computer rank exam
- 等级观念sense of hierarchy
- 等级考试grade examination
- 分等级graduation
- 电压等级voltage class
- 绝缘等级insulation grade
- 公共英语等级考试PETS
- 社会等级class
- 高等级height class
- 防护等级level of protection
- 分等级的scalar
- 质量等级quality grade
- 强度等级strength grade
- 精度等级accuracy class
- 等级证书grading certificate