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- 三级SBRThree-stage SBR process
- 三级网extinguishment
- 三级机Leve13
- 三级钢third-class steel
- 关于施工企业三级成本核算体系会计科目设置方案的优化The Optimization of Scheme in Accounting Headings of Three- step Cost Accounting System in Construction Enterprises
- 三级防雷Three-level lightning protection
- 三级康复Three-stage rehabilitation treatment
- 三级圆形平台three-tiered circular terrace
- 三级甲等class-3grade-A
- 三级层序third-order sequence
- 三级递进go forward by three steps
- 三级除尘3-stage dust-removal
- 三级医院3rd Class Hospital
- 三级干预tertiary intervention
- 三级中和teritiary neutralization
- 三级评判the three-level judgment
- 三级防范third-grade prevention
- 三级课程three - class curriculum
- 三级负压three - stage negative pressure
- 三级六等three grades & six levels
