灰分

• Determination of ash for organic chemical products
  有机化工产品灰分的测定
• Determination of " fixed ash " of caseins ; reference method
  干酪素的化合灰分测定.参考法
• Methods for analysis of coal ash and coke ash
  煤灰分及焦炭灰分的分析方法
• Animal feeding stuffs - determination of crude ash
  动物饲料.粗灰分的测定
• How to control and eliminate the welding strength
  加强采制化管理缩小精煤产销间灰分误差
• Classification for quality of coal part 1 : ash
  煤炭质量分级第1部分：灰分
• Test method for ash in pulp , paper , and paper products
  纸浆纸和纸产品灰分含量测试方法