The separation of acetone, ethanol, benzene, chloroform, toluene was performed on a 10 % PEG - 20 M Chromosorb - W - AW - DMCS column.对样品中残留丙酮 、 乙醇 、 苯 、 氯仿 、 甲苯的分离选用10%PEG-20Mchromosorb -W-AW-DMCS 公谱柱.With the column ov...
The paper introduces the formula of bonderizing agent, the best technology and application field.本文介绍了耐磨磷化剂的配方, 最佳工艺条件及其应用领域....new laser technology...新的激光技术Both processing technology and quality requirement of salt chit...