查询词典 quaternary
- 与 quaternary 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Respectively. The results of regression and calculation of the quaternary system provide fundamental data for designing and optimizing the preparing process of the PSC adduct.
该四元体系Pitzer参数的回归及相平衡的计算,为〓的合成工艺条件研究及工程设计提供了基础数据。
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Ancient biomolecules obtained and characterized from in situ Quaternary fossils or sedimentary matrix have provided Quaternary scientists with quantitative and high resolution data that contain rich and some times unique paleobiological, paleogenetic, and paleoenvironmental information.
作者预见对第四纪地层中的原位和分散保存的古代生物分子的研究将在广度上以多分子综合研究而深度上与单体分子同位素技术相结合,为第四纪科学家们提供大量解决地质学和演化生物学问题的高精度数据。
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Groundwater types are composed of Quaternary pore phreatic water、Quaternary pore confined water and pore-fissure water.
乾安县地下水主要有第四系孔隙潜水、第四系孔隙承压水、上第三系裂隙孔隙承压水。
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The related feature of tribromide quaternary ammonium salt as selective bromide reagent was investigated by the reaction of acetophanone, propanone, phenol with self-made benzyl triethyl tribromide quaternary ammonium salt.
首次通过自制的苄基三乙基三溴季铵盐与苯乙酮、丙酮、苯酚等的反应,研究了三溴季铵盐作为选择性溴化剂的相关性能。
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The enhancement of the reaction activity is attributed to the phasetransfer capability of the built-in quaternary ammonium and pyridinium salts of theMn catalyst. The effect of the internal quaternary ammonium and/or pyridiniumsalt on the epoxidation of substituted chromenes is similar to that of the externalpyridinium salts and ammonium halides.
分子内季铵盐和吡啶盐具有相转移能力,对于取代色烯不对称环氧化的作用与外加的吡啶盐和卤化铵的作用相似,使Mn催化剂催化取代色烯环氧化反应的活性明显提高。
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The experimental results showed that the double salt Na2SO4·MgSO4·4H2O forms in the quaternary system Na+,Mg2+//SO42-,B4O72--H2O at 288K. The quaternary system has three invariant points F1,F2, and F3, seven univariant curves E1-F1,E2-F1,E4-F3,E5-F3,E3-F2,F1-F2,F2-F3, and five fields of crystallization [Na2SO4·MgSO4·4H2O,Na2B4O7·10H2O,Na2SO4·10H2O, MgSO4·7H2O,MgB4O7·9H2O].
研究结果表明:交互四元体系Na+,Mg2+//SO42-,B4O72--H2O 288K时的相平衡实验中,有复盐Na2SO4·MgSO4·4H2O生成,平衡相图中有3个共饱点,7条单变量曲线,5个结晶区,对应的平衡固相分别为Na2B4O7·10H2O,MgB4O7·9H2O,Na2SO4·10H2O, MgSO4·7H2O和Na2SO4·MgSO4·4H2O。
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The results show that methyl group strengthens the electrostatic attractions, but reduces the H-bonds effect, while benzyl group can make both electrostatic and H-bond effects strong. The theoretical results are identical with the results of the collectors flotation tests. Collecting ability of the quaternary amine salts is better than that of dodecylamine and dodecyl bimethyl amine. The quaternary amine salt containing benzyl group performs best, and it is little affected by pH value. Substitution of N-containing polar group in amine collectors can impact the aluminosulicate minerals flotation.
研究结果表明:甲基的取代可增强阳离子的静电作用能力,同时,削弱它与矿物表面之间的氢键作用;苄基的取代不仅增强药剂的静电效应,而且增加氢键的结合能力;理论分析结果与浮选试验结果一致,季铵盐的浮选能力较伯胺与叔胺的强,连有苄基的季铵盐对铝硅酸盐矿物的捕收能力最强,且受pH值影响小。
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There were five Quaternary glaciations in the Halasi River Catchment according to the remains of Quaternary glaciations and C〓 dating.
根据第四纪冰川遗迹和〓测年,哈纳斯河流域存在五次明显的冰期,其中更新世存在三次冰期。
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Palaeogeography of China comes from stratigraphy, historical geology, tectonics, palaeontology, sedimentary petrology, natural geography, Quaternary geology, archaeology, human historical geography, etc.. Thus branch disciplines such as stratigraphic palaeogeography, tectonic palaeogeography, palaeontological palaeogeography, lithofacies palaeogeography, natural geographic palaeogeography, Quaternary palaeogeography, human historical palaeogeography, etc. are originated and developed.
我国古地理学来源於地理学、地史学、大地构造学、古生物学、沈积岩石学、自然地理学、第四纪地质学、考古学、人类历史地理学等,因此就相应地产生和形成了地层古地理学、构造古地理学、生物古地理学、岩相古地理学、自然地理古地理学、第四纪古地理学、人类历史古地理学等分支学科。
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This paper enumerates nine macroscopic climatic indicators in the study of China's Quaternary climate:Quaternary glacial vestiges,periglacial structure, mammal fossils,plant fossils,mollusk fossils,foramin- iferal fossils,lithology,karst and sea-level oscillation.
本文首先列述了中国第四纪气候研究中9种主要宏观气候标志:冰川作用遗迹、冰缘构造,哺乳动物、植物、软体动物、有孔虫化石,岩性、岩溶及海平面升降等方面的特征。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力