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   structure and 在 燃料化工 分类中 的翻译结果: 查询用时:0.203秒
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structure and
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  结构与其
    STUDY ON THE RELATIONSHIP BETWEEN THE COLLOIDAL STRUCTURE AND STABILITY OF ALKYLSALICYLATES
    烷基水杨酸盐的胶体结构与其稳定性关系研究
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    In this paper, a lot of literature have been reviewed about the relationship between the structure and the mechanical properties of hydroxy terminated polybutadiene (HTPB) polyurethanes.
    综述了大量有关丁羟聚氨酯弹性体结构与力学性能关系的主要资料,指出,在丁羟聚氨酯弹性体中存在有微相分离的形态结构,这种结构与其力学性能密切相关。
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    The relationship bet-ween the chemical structure and the pour point of the vacuum distillates hasalso been examined.
    同时,对减压馏分的化学组成、结构与其凝点的关系也进行了考察。
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    In this paper, the technics and synthetic methods of cationic bitumen emulsifiers such as amine, amide, quarter amine salt etc were introduced . The relationship between the structure and property of emulsifier was discussed.
    介绍了胺类、酰胺类及季胺盐类阳离子沥青乳化剂的合成方法及工艺,并对其分析方法进行了阐述,讨论了乳化剂的结构与其性能之间的关系。
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  “structure and”译为未确定词的双语例句
    Preparation, Molecular Structure and Thermal Decomposition Mechanism of [Pb(NTO)_2(H_2O)]
    [Pb(NTO)_2(H_2O)]的制备、分子结构和热分解机理的研究
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    Morphological Structure and Distribution Analysis of Nitrogen Compounds in Heavy Fractions of Petroleum I.
    重质石油中含氮化合物的形态及分布分析Ⅰ
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    Morphological Structure and Distribution Analysis of Nitrogen Compounds in Heavy Fractions of Petroleum Ⅲ
    重质石油中含氮化合物的形态及分布分析Ⅲ
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    CORRELATION BETWEEN MOLECULAR STRUCTURE AND SENSITIVITY OF ENERGETIC MATERIALS
    含能材料分子结构与感度的相关性
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    Molecular Structure and Properties of Water Soluble Lubricant Additives
    水溶性润滑添加剂的分子结构与性能
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  structure and
We give criteria for a divisor to be Cartier, globally generated and ample, and apply them to a study of the local structure and the intersection theory of aG-variety.
      
This is done using a descending series associated to the complex structure and the Borel spectral sequences for the corresponding set of holomorphic fibrations.
      
A Theory of Generalized Multiresolution Structure and Pseudoframes of Translates
      
This algorithm has simple structure and is very practical and stable.
      
In this paper a generalized defaultable bond pricing formula is derived by assuming that there exists a defaultable forward rate term structure and that firms in the economy interact when default occurs.
      
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Chloroform-soluble materials from Yanzhou coal were prepared from extracting the original coal and samples preheated for 20 min up to 400℃. Some results of FT-IR, ~(13)C-NMR, ~1H-NMR, SEM, molecular weight, thermogravirr.etric,and ultimate analysis are presented. The modified Brown-Lander method is used to calculate the average molecular structure parameters of chloroform extracts. It is found that the average molecular structure and size of the extract from the original coal are different from those of...

Chloroform-soluble materials from Yanzhou coal were prepared from extracting the original coal and samples preheated for 20 min up to 400℃. Some results of FT-IR, ~(13)C-NMR, ~1H-NMR, SEM, molecular weight, thermogravirr.etric,and ultimate analysis are presented. The modified Brown-Lander method is used to calculate the average molecular structure parameters of chloroform extracts. It is found that the average molecular structure and size of the extract from the original coal are different from those of samples preheated to 350℃ and higher, but both of them are rich in hydrogen and contain hydroaromatic portion in the average molecules. The preheating at temperatures near the softening point causes the samples pyrolyzed and gave higher yields of extract than the original coal does. The origin of chloroform extract and its function in the coal carbonization and liquefaction are discussed. All the material extracted from the original coal and most of that from coals preheated up to the softening point are thought to be occluded in the network structure of the coal, while extract from coals preheated to higher temperature is suggested as the product of inner molecular cleavage of ether or other oxygen bonds. The experiment shows that an i mportant reaction-hydrogen transfer, occurs within and between coal molecules during preheating.

用傅立叶红外、碳谱、氢谱、电子扫描显微镜、平均分子量、热重法和元素分析测定研究了兗州煤预热前后氯仿抽出物的性质τ眯拚蟮腂rown—Lander法计算了氯仿抽出物的平均分子结构。兖州煤与经预热到350℃以上煤的氯仿抽出物的平均分子结构与大小有所不同,但它们都具有富氢的结构。并含有氯化芳烃。预热到煤软化温度附近时,兗州煤开始热解使抽出率比原煤的火致哿寺确鲁槌鑫锏挠衫醇捌湓诮够⒁夯械淖饔谩T汉图尤鹊饺砘露惹暗某槌鑫?可以认为原来就存在于煤网状结构之间,而加热到更高温度时,其抽出物是煤分子内部醚键或其他含氧基团断裂的产物。预热时,在煤分子内部或分子间发生一个十分重要的氢转移的反应。

This paper is an introduction about technical improvements on a two stage water gas furnace with its diameter of 1.6 m and tests on gasification of different coal in Linsheng Mine, Shenyang Coal Mine Bureau. About 30 items ef technical improvements have been conducted on the structure and technique of the furnace and the items are such as a pipeline for air blowing system, gas pipeline, steam pipeline, auto-control system, furnace boty, measuring meters and cct..Gasification trials with meagre coal from...

This paper is an introduction about technical improvements on a two stage water gas furnace with its diameter of 1.6 m and tests on gasification of different coal in Linsheng Mine, Shenyang Coal Mine Bureau. About 30 items ef technical improvements have been conducted on the structure and technique of the furnace and the items are such as a pipeline for air blowing system, gas pipeline, steam pipeline, auto-control system, furnace boty, measuring meters and cct..Gasification trials with meagre coal from Xitun and gas coal from Fushan have been conducted.lt has shown that the main technical and economic data obtained from the trials have basically reached the standards of a industrial water gas furnace. After a further improvements of the structure and technique of the furnace, it will be suitable for mining area and towns in medium and small to have town gas by using the furnace.

本文对炉体和工艺进行了改进和完善,该两段炉对中、小城镇和矿区是比较理想的制造煤气的装置。

As more and more heavy crude oils are being explorated, various upgrading processes with and without hydrogen have been developed. Several high performance hydrodenitrogenation catalysts with good resistance to nitrogen poisoning have been commercialized. Research and development works for these catalysts and related processes require more detailed understanding on hydro- carbon composition and nitrogenous compounds of feedstocks. Shengli virgin gas oil (204 -482℃) was cut into 16 narrow fractions by true boiling...

As more and more heavy crude oils are being explorated, various upgrading processes with and without hydrogen have been developed. Several high performance hydrodenitrogenation catalysts with good resistance to nitrogen poisoning have been commercialized. Research and development works for these catalysts and related processes require more detailed understanding on hydro- carbon composition and nitrogenous compounds of feedstocks. Shengli virgin gas oil (204 -482℃) was cut into 16 narrow fractions by true boiling point distillation. Californian virgin gas oil was cut into light and heavy gas oil fractions (204 360℃, 360 482℃). MS and NMR were used to study the structure and composition of both oils. Elemental analysis, non- aqueous titration, ion exchange chromatography, capillary chromatography, GC/MS and LVMS were used to study the distribution and type of nitrogenous compounds present in these oils. The hydrocarbon composition of Shengli gas oil cut are quite different from that of Californian gas oil cut. Shengli gas oil contains more paraffins where- as Californian gas oil contains more naphthenes and aromatics. The content of aromatics increases but aromaticity, f_a, of aromatics decreases as boiling point of cut rises owing to the increasing size and number of substitutes in aromatic molecule. The nitrogen content of Californian gas oil is higher than that of Shengli gas oil but the main types of nitrogen compounds in these two gas oils are quite similar. The basic nitrogenous compounds are mainly alkylquinolines in light gas oil and benzoquinolines, alkylquinolines, tetrahy - droquinolines and dihydroquinolines in heavy gas oil,

胜利直馏柴油馏分(204~482℃)由实沸点蒸馏切成十六个窄馏分。加里福尼亚柴油馏分切割成轻、重两个柴油馏分(204~360℃和360~482℃)。用质谱法和核磁共振法研究了这两种柴油馏分的烃族组成和结构及其随馏分沸点变化的规律。对含氮化合物则采用元素分析,非水溶液滴定,离子交换色谱,毛细管色谱,色谱/质谱以及低电压质谱法等手段,研究了它们在柴油中的分布以及存在于柴油中的碱性氮化物主要类型。在轻柴油馏分中以烷基喹啉类为主,在重柴油馏分中的碱性氮化物则以苯并喹啉类、喹啉类和二氢喹诺酮类为主.

 
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