分级法

• The application of evaluating grade in thoracolumbar burst fracture
  评分分级法在胸腰椎爆裂骨折中的应用
• Method of visual classification for muscovite mica blocks , thins and films
  白云母块薄片及薄膜的目视分级法
• Classification or grading method
  归类或分级法
• Particle size analysis ; size analysis by air classification ; fundamentals
  粒度分析.用空气分级法进行粒度分析.原理
• Modulation of spinnable polycarbosilane with a high melting point via fractional precipitation
  沉淀分级法调制纺丝级高熔点聚碳硅烷
• Particle size analysis ; size analysis by air classification with centrifugal counterflow classifier
  粒度分析.用离心逆流分粒器风力分级法进行粒度分析
• Particle size analysis ; size analysis by air classification with gravitation - counterflow elutriator
  粒度分析.用重力逆流筛分机的风力分级法进行粒度分析
• Methods for ultrasonic testing and classification of welds for steel space grid structures with welded joints
  焊接球节点钢网架焊缝.超声波探伤及质量分级法
• Methods for ultrasonic testing and classification of welds for steel space grid structures with bolted joints
  螺栓球节点钢网架焊缝.超声波探伤及质量分级法