quaternary

Computational experiments have shown that protein primary sequence contains quaternary structure information.

计算实验表明蛋白质一级结构包含着四级结构信息.

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The ionic liquids formed from anhydrous AlCl 3 with low-carbon-chain quaternary ammonium salt such as tetrabutylammonium bromide or triethylamine hydrochloride exhibit the advantage of easy separation from reaction mixture. The isolated yield of 1,2-bis ( 3,4-dimethylphenyl) ethane is in the range of 40%~ 60%.

短碳链季铵盐四丁基溴化铵或三乙胺盐酸盐与无水AlCl3形成的离子液体具有与产物易于分离的优点，1,2-双（3,4-二甲基苯基）乙烷的分离产率为40%～60%。

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A novel bi-pyridine quaternary ammonium salt cationic surfactants was prepared by acrylic modified rosin.

普通松香通过丙烯酸改性,与氯化亚砜、甲醛、吡啶合成新型吡啶双季铵盐阳离子表面活性剂.

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Artificial reproduction on the Quaternary geological environment and soil desertification

第四纪地质环境的人工再造作用与土地荒漠化

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It was pointed out that the quaternary ammonium salt was the most important phase transfer catalyst.

指出了此类合成反应中所采用的重要相转移催化剂是季铵盐类.

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The effects of different quaternary ammonium salts were studied.

研究了季铵盐的种类、结构对插层效果的影响.

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Iron-nickel-phosphorus-boron quaternary alloy electroless plating on copper panel was described.

在铜基上化学镀铁 - 镍 - 磷 - 硼四元合金.

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The electronic structure of a quaternary alloy has been investigated using EHT band calculation method.

用紧束缚能带计算方法(EHT)研究了标题多元合金的能带及电子结构.

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Late Quaternary tectonic deformation and earthquake hazard in continental China

中国大陆岩石圈最新构造变动与地震灾害

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The method of tectonic geomorphology was used to study tectonic activity and geomorphological features of Su-Lu segment in late Quaternary.

应用构造地貌学方法分析了断裂带晚第四纪构造活动及地貌特征；

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The silicone quaternary was synthesized reaction of-H silicone, unsaturated-ether, chloroacetic acid, dimethylamine.

以低含氢硅油 、 不饱和聚醚 、 一氯乙酸和二甲胺为原料, 制备得阳离子有机硅油.

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An antistatic agent of polyacrylamide quaternary ammonium compound was designed and synthesized.

设计合成了聚丙烯酰胺季铵盐类的抗静电剂.

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An improvement of volumetric method for determination of potassium with sodium tetraphenylboron and quaternary ammonium salt

四苯硼酸钠季铵盐容量法测定钾的改进

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The tectogenesis in the Quaternary period of the Dongting Basin

洞庭盆地的第四纪构造活动

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The essential characteristic and determination method of two types of phase diagrams for the multicomponent systems were studied. One is pseudo ternary phase diagram, and the other is n-tetrahedroid quaternary phase diagram.

以四组分为主，探讨了多组分体系两类相图的基本特征与制作方法，第一为伪三组分相图，第二为正四面体相图。

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With chlorine and phenols, of categories, like supporting alternative use quaternary more good results.

畜禽消毒剂特点:空气消毒.与含氯、酚类 、 氧化类 、 季铵盐类配套交替使用效果更加佳.

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Synthesis and Neuromuscular Blocking Activity of Bis-[ ( 1-benzyl) tetrahydroisoquinoline] Quaternary Ammonium Compounds

双苄基异喹啉季铵类化合物的合成及肌肉松弛活性

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Determination of quaternary phosphonium salt tributyl tetradecyl

季粦盐三丁基十四烷基氯化粦（TTPC）的测定

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OBJECTIVE To study the synthesis of quaternary ammonium salt derivatives of haloperidol and their vasodilative activities.

目的合成氟哌啶醇季铵盐衍生物及其还原物并研究它们的扩血管活性.

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The important technique of dating quaternary: uranium series dating technique by thermal ionization mass spectrometry

第四纪年代学的利器：热电离质谱铀系定年技术

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Offset features and earthquakes on the median tectonic line in southwestern Japan in Late Quaternary

西南日本中央剪切构造带晚第四纪以来位错特征与地震

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Analysis of the data about strata, tectonic geomorphology and fault activity indicate that newest activity of the south of Nujiang fault is early-middle Pleistocene, namely, there is no obvious signs of activity since late Quaternary.

综合地层、构造地貌和断层活动的资料认为怒江断裂带南段在早-中更新世有过活动，而晚第四纪以来没有明显的活动迹象。

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The discussion centers on ternary and quaternary logic.

文章着重讨论了三值逻辑与四值逻辑的纠错。

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Moreover , there is a chiral quaternary carbon in the 1-hydroxyethylidenediphosphonic ( hedp ) ligand.

证实1-羟基乙叉 -1,1-二膦酸配体 ( hedp ) 中的季碳为手性碳原子.

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In the Quaternary formation and Upper-Tertiary formation of Yinggehai Basin, except for abnormal pressure and compaction, there are mainly four factors affecting acoustic time, which are lithology variation, cementation, gas in the formation and crack.

莺歌海盆地第四系和上第三系地层内除异常压力和压实作用外，影响声波时差的因素主要有岩性变化、成岩胶结作用、地层含天然气及裂缝的存在。

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A great many proteins, especially enzymes, are oligomeric and consequently possess quaternary structure.

很多蛋白质尤其是酶类, 是低聚物,因此拥有四级结构.

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The quaternary excess volumes were predicted by using only binary parameter without any multicomponent parameters.

在不引入任何多元参数的情况下,直接用二元参数预测四元系的超额体积.

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Cationics are usually quaternary ammomium salts.

阳离子表面活性剂通常为季铵盐类.

词典精选例句

Various iodinated strong base quaternary ammonium anion exchange resins were prepared.

制备了数种不同的强碱型阴离子碘化树脂.

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Flocculation of kaolin suspensions using ternary polymerization flocculant ( CAS) synthesized by chitosan ( CTS), acrylamide and ethyl acrylate quaternary ammonium salt was investigated in lab-scale.

采用烧杯混凝实验研究了壳聚糖（CTS）、CTS与丙烯酰胺和丙烯酸乙酯季铵盐三元接枝共聚阳离子絮凝剂（CAS）对高岭土悬浊液的絮凝特性。

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