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- quaternary surfactant 季盐表面活性剂
- 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。
- A new type of surfactant,consists of quaternary ammonium salt and polyethylene glycol side chain,with a high phasetransfer catalytic ability. 多甘醇单甲醚季铵盐是一种同时含氧乙烯链及季铵盐的新型表面活性剂，它具有良好的相转移催化能力。
- Design of quaternary Schmitt circuits. 四值施密特电路设计。
- Must not protrude above the metal surfact. 尼龙螺母不应高出金属表面。
- IS THERE REALLY QUATERNARY GLACIATION ON LUSHAN? 庐山真的有第四纪冰川吗?
- A EOR pilot test of WPS surfactant flooding. 活性剂WPS驱提高采收率先导试验研究
- Wettability is an important property of surfactant. 润湿性是表面活性剂的一个重要特性。
- Quaternary ammonium salts of bisamides and quaternary ammonium salt cationic surfactant of imi_dazoline were synthesized and the content of cations was determined. 合成了双酰胺类季铵盐和咪唑啉型季胺盐阳离子表面活性剂，并进行了阳离子含量测定。
- With synthesis of a quaternary ammonium gemini surfactant as an example.The process involves two steps reaction: quaternization reaction and urethane reaction. 摘要以合成一种季铵盐双子表面活性剂为例，过程包括季铵化和胺酯化两步反应。
- The cover rocks are marine mudstone from Pliocene to Quaternary. 储层发育有砂岩、灰岩（礁灰岩）、基岩等。
- Late Quaternary Hydrographic Records from the South China Sea I . 南海晚第四纪古水文之探讨I.
- They are also used as the material of ether and ester surfactant. 也用作醚型，酯型表面活性剂的原料。
- Woolly mammoths died out during the late Quaternary period. 猛犸象在第四纪晚期灭绝了。
- Quaternary overburden is completely developed with thick layer. 第四系松散堆积层发育完全,厚度大。
- Applications of surfactant in oil field have been reviewed. 综述了表面活性剂在油田中的应用。
- Multifunctiona synergist MAT is a king of anionic surfactant. 多功能增效剂MAT属阴离子表面活性剂。
- It showed to be a surfactant, N,N-dihydroxyethyl dodecylamine. 结果表明，该组分为一表面活性剂N，N-二羟乙基十二烷基胺。
- There was a synergism among alkali,surfactant and polymer. 显微照片验证了含驱油剂的乳液存在多重乳状液。
