quaternary

• The quaternary sediments are largely undeformed .
  第四纪的沉积物大部分未变形。
• Cationics are usually quaternary ammomium salts .
  阳离子表面活性剂通常为季铵盐类。
• Non - aqueous titrimetric analysis of quaternary ammonium salt n
  263的非水滴定分析
• Optimal quaternary self - orthogonal codes of dimension three
  4上的3维最优自正交码
• Thermoelectric properties of quaternary ag - bi - sb - te alloys
  四元合金的热电性能
• Dalinghe river ; hidden fault ; quaternary ; terrace
  大凌河隐伏断裂第四纪阶地
• Test method for ph of fatty quaternary ammonium chlorides
  脂族季铵氯化物中ph值的测试方法
• A study on the yangfan quaternary section , linyi , shanxi
  山西临猗杨范第四纪沉积剖面初步研究
• Test method for ash in fatty quaternary ammonium chlorides
  脂族季铵氯化物中灰分的测试方法