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properties
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  性能
    Studies on the syntheses, properties and application of polydentate pendant-armed calix[4]arene derivatives
    含多配位基团侧臂的杯[4]芳烃衍生物的合成、性能和应用研究
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    The Synthesis and Characterization of Side-Chain Liquid Crystal Polyimides (Slcpi) and the Study on Its Properties
    侧链液晶聚酰亚胺的合成、表征及性能研究
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    Studies on the Syntheses of Tripodal and Other Related Compounds and Their Coordination Properties with Metal Cations
    三脚架型和其它相关化合物的合成及其与金属离子的配位性能研究
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    Study on Synthesis, Characterization and Catalytic Properties of Mo(Ⅵ) Catalysts Used in the Epoxidation of Cyclohexene
    环己烯环氧化催化剂的合成、表征及其催化性能研究
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    Study on Synthesis and Properties of Ternary Laryerd Carbide Ti_3SiC_2
    三元层状碳化物Ti_3SiC_2的制备及性能研究
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  性质
    Model Complexes of Manganese-Containing Metalloenzyme: Studies on Synthesis, Structure and Properties of Mn(Ⅲ),Mn(Ⅳ) and Mixed-Valence Multnuclear Manganese Complexes
    金属锰酶模型配合物:Mn(Ⅲ)、(Ⅳ)及混合价多核锰配合物的合成、结构及性质研究
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    Study on the Photochemical Properties and Complexes of Heteroarylethenes
    杂芳基乙烯类化合物光化学性质及其相关配合物的研究
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    Physicochemical Properties of Proteins at Air/Water Interface and Proteins Monolayer Forming
    蛋白质在气/水界面上的物理化学性质和单分子膜成形
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    Studies on the Properties and Applications of Cyclometallated Ferrocenylimines
    二茂铁亚胺环金属化合物的性质与应用研究
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    Investigation on the Optical Properties of GaPN Alloy and the Transient Photoluminescence of GaInP and AlGaInP Alloys
    GaPN混晶光学性质及GaInP、AlGaInP合金瞬态发光性质的研究
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  特性
    Vapor Growth and Photoelectrical Properties of ZnSe Bulk Single Crystals
    ZnSe晶体的气相生长与光电特性研究
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    The Studies of the Physical and Chemical Properties of the Surface and Interface of Metal Oxides
    金属氧化物的表面和界面物理、化学特性研究
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    Some Studies on Properties and Applications of Negative Refractive Media
    负折射介质特性与应用的若干研究
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    An/Ni-catalyzed Growth and Field Emission Properties of Carbon Nanotubes
    金/镍催化下碳纳米管生长与场发射特性
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    PHB/PEG Multiblock Copolymers: Preparation, Structure, Properties, and Application as Molecular Imprinting Materials
    PHB/PEG 多嵌段共聚物的制备、结构、特性及其作为分子印迹材料的研究
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    Study of Polyoxometalates on Anodic Aluminum Oxide/glass Carbon Electrode Electrochemical Properties and Application
    杂多酸在阳极氧化铝膜/玻碳电极上电化学性质及应用研究
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    The Studies for the Synthesis, Crystal Structure and Magnetic Properties of Cyano-bridged Complexes
    氰基桥联配合物的合成、晶体结构和磁性质研究
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    Theoretical Study on Electronic Structure and Photophysical Properties of Spiro-type Organic/organometallic Complexes
    螺旋结构有机/有机金属配合物电子和光物理性质的理论研究
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    The Establishment and Application of Rheological Method for Study on Morphological Properties of Lipoplex
    用于lipoplex形态研究的流体粘度分析法的建立与应用
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    Crystal Structure, Magnetic Properties and Mixing Effects of Light and Heavy Rare Earths in the Metamagnetic Compounds RCo_2
    变磁性化合物RCo_2的晶体结构、磁性及轻重稀土的混合效应研究
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  properties
They result in many nontrivial properties of quantum immanants.
      
The paper studies generic commutative and anticommutative algebras of a fixed dimension, their invariants, covariants and algebraic properties (e.g., the structure of subalgebras).
      
Whenever the action of a maximal torus on the coneCλ* has some nice properties, we obtain simple closed formulas for all weight multiplicities and theirq-analogs in the representationsVnλ,n∈?.
      
Some basic properties of the compactness propertiesCn are shown.
      
A local-global principle for finiteness properties ofS-arithmetic groups over number fields
      
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The Mannich bases derived from phenylacetone (Ⅰ,R=Me)and dibenzyl ke- tone (Ⅰ,R=CH_2Ph) prepared in our previous work gave expected semicarba- zones(Ⅱ) in neutral or slightly acidic media.Degradation of their methiodides gave vinyl ketone semicarbazones (Ⅲ).The structure of the latter was shown by their characteristic ultra-violet light absorption properties,and they gave in- tense absorption bands near 260 mμ.The pyrazolinecarboxamides (Ⅳ),if formed,would behave more like saturated semicarbazones such...

The Mannich bases derived from phenylacetone (Ⅰ,R=Me)and dibenzyl ke- tone (Ⅰ,R=CH_2Ph) prepared in our previous work gave expected semicarba- zones(Ⅱ) in neutral or slightly acidic media.Degradation of their methiodides gave vinyl ketone semicarbazones (Ⅲ).The structure of the latter was shown by their characteristic ultra-violet light absorption properties,and they gave in- tense absorption bands near 260 mμ.The pyrazolinecarboxamides (Ⅳ),if formed,would behave more like saturated semicarbazones such as Me·CO·CHMePh and CH_2Ph·CO·CHEtPh,which gave maxima located at about 230mμ.The vinyl ketone semicarbazones could not be converted to the cyclic compounds (Ⅳ) by treatment with concentrated sulphuric acid.It was recalled that Δ~2-isoxazolines,beside vinyl ketone oximes,were obtained by us previously from the degradation of Mannich base oxime methiodides. Both the dimethylamino(I:R=CH_2Ph,R'=Me) and the diethylamino(I: R=CH_2Ph,R'=Et) compounds gave the identical product (Ⅷ) on treatment with semicarbazide hydrochloride in the presence of excess sodium acetate.It was recalled that an abnormal compound,m.p.101-102,was formed by these two Mannich bases on treatment with hydroxylamine hydrochloride and sodium acetate.This product might be (Ⅶ),formed by elimination of a mole of hy- droxylamine from (Ⅸ),which is analogous to (Ⅷ). Treatment of the Mannich base (I,R=CH_2Ph,R'=Me) itself with sodium acetate gave dibenzyl ketone.This is the reverse change of the original Mannich reaction.However,its methiodide,on degradation with sodium hydroxide, gave a vinyl ketone which readily dimerised into a dihydropyran (Xa or Xb). Several expected pyrazolines were obtained from the Mannich bases and phenylhydrazine.Their ultra-violet light absorption characteristics were listed.

几个 Mannich 碱在中性或微酸性的情况下制成它们的缩氨基脲,其中一个Mannich 碱在碱性情况下形成一个含有两分子氨基脲的物质。那些 Mannich 碱缩氨基脲的季铵碱当在碱性情况下递降时生成乙稀酮的缩氨基脲,而不生成环状的化合物(Ⅳ)。从二苯甲基酮衍生的一个 Mannich 碱经醋酸钠作用后变为原来的1,3-二苯基丙酮,但这个 Mannich 碱的季铵盐经碱作用后成为乙稀酮,而这个乙烯酮迅速贰聚。几个4,5-二氢隣二氮杂茂自 Mannich 碱如预期地形成。上列许多产物的紫外线光谱曾经测定。

Karrer and Enslin reported that the structure of alstyrine (S_(19)H_(22)N_2), a selenium- dehydrogenation-degradation product obtained by Sharp from the alkaloid alstonine, is identical with that of corynanthyrine, α-[2-(4, 5 diethylpyridyl)]-β-ethylindole (Ⅱ), despite the fact that the melting points of these two substances have a 5°difference. In his investigation, the author of the present paper has synthesized two homologues of (II), α-(2-pyridyl)-β- methylindole (Ⅲ) and α-(2-pyridyl)-β-ethylindole (Ⅳ),...

Karrer and Enslin reported that the structure of alstyrine (S_(19)H_(22)N_2), a selenium- dehydrogenation-degradation product obtained by Sharp from the alkaloid alstonine, is identical with that of corynanthyrine, α-[2-(4, 5 diethylpyridyl)]-β-ethylindole (Ⅱ), despite the fact that the melting points of these two substances have a 5°difference. In his investigation, the author of the present paper has synthesized two homologues of (II), α-(2-pyridyl)-β- methylindole (Ⅲ) and α-(2-pyridyl)-β-ethylindole (Ⅳ), finding that the former has almost the same ultraviolet absorption spectrum as that of alsyrine and that, like alstyrine, the metho- sulphate of the compounds (Ⅲ) and (Ⅳ) gives the same red colour reaction upon treatment with dilute sodium-hydroxide solution. The Fischer indole synthesis to cyclize the phenylhydrazone of the corresponding alkyl- 2-pyridylketone in the presence of mineral acid was employed by the author in the preparation of compounds (Ⅲ) and (Ⅳ). Besides, three a-carboline derivatives, namely, 2-(cyclohexylmethyl)-β-carboline (Ⅻ), 2-[(4'-methylcyclohexyl)-methyl]-β-carboline (XIII) and 2-[(2'-methylcyclohexyl)-methyl]- β-carboline (XIV), have also been synthesized; none of them is identical with alstyrine in physical and chemical properties. The preparation of compounds (Ⅻ), ((XIII)) and ((XIV)) was carried out according to the method originated by Bischler and Napieralski. This involved the condensation of tryptamine with a suitable acid, or acid chloride, first to form an amide, which was then cyclized with phosphorus pentoxide, and finally dehydrogenated .partially with selenium. The melting points of the two α-(2-pyridyl)-β-alkylindoles, three β-carbolines, their inter- mediates, and a few derivatives of theirs are as follows: ■

1.合成了兩種吲(口朶) 衍生物:α-(2-吡啶基)-β-甲基吲(口朶) 及α-(2-吡啶基)-β-乙基吲(口朶)。前者的紫外線吸收光譜與阿爾斯泰令(alstyrine,係一種由西阿斯木鹼經硒降解後的產物)的吸收光譜極為類似;且二者有一種相同的顏色反應。因此說明阿爾斯泰令的結構可能與可利南斯令(corynanthyrine),α-[2-(4,5-雙乙吡啶基)]-β-乙基吲(口朶)相同。 2.合成了三種β-咔卟啉的衍生物:2-環己烷甲基-β-咔卟啉,2-[(4′-甲基環己烷)甲基]-β-咔卟啉及2-[(2′-甲基環已烷)甲基]-β-咔卟啉。這些化合物的化學及物理性質都和阿爾斯泰令不同。因此後者不是β-咔卟啉衍生物。

In the previous paper, we reported the formation of bis(O,O-diethyldithiophosphate) disulfide as an intermmediate product in the course of chlorination of O,O-diethyldithiophos phoric acid. During the past decade, much effort has been directed towards the synthesis of mixed phosphoric esters and esters of phosphoric anhydrides, some of them being found as powerful insecticides. The disulfide with the general, known as "phos phatogen," has not been closely investigated, and apart from isolated cxamples, little...

In the previous paper, we reported the formation of bis(O,O-diethyldithiophosphate) disulfide as an intermmediate product in the course of chlorination of O,O-diethyldithiophos phoric acid. During the past decade, much effort has been directed towards the synthesis of mixed phosphoric esters and esters of phosphoric anhydrides, some of them being found as powerful insecticides. The disulfide with the general, known as "phos phatogen," has not been closely investigated, and apart from isolated cxamples, little about this class of compounds has been recorded in the li'erature. Considering their possible insecticidal and fungicidal activities, we prepared a series of the disulfides, aliphatic as well as aromaic, and examined some of their chemical properties.In connection with the investigation stated above, we needed various O,O-dialkyldithiophos phoric acids as intermmediates. The reaction bstween monohydroxy alcohols, polyhydroxy alcohols and different types of phenols with phosphorus pentasulfide were studied. Methyl, ethyl, i-propyl, n-butyl, i-butyl, i-amyl i-amyl and cyclohexyl alcohols reaced with phosphorus pentasulfide smoothly to give O,O-dialkyldithiophosphoric acids in 80-90% yield. The reaction product of polyhydroxy alcohols, namely, ethylene glycol, trimethylene glycol, or glycorol with phosphorus pentasulfide was not homogeneous; we failed to isolate from it the expected product. Although pbenol and β-naphthol reacted with phosphorus pentasulfide equally smoothly, no expected dithiophosphoric acids were obtained from chlorophenols and nitrophenols.Pure sodium salts of the O,O-dialkyldithiophosphoric acids were oxidized by calculated amount of bromine in cold aqueous solution to give the disulfides in 58-85% yield. Eight different disulfides, were propared, where R represents methyl, ethyl, i-propyl, n-butyl, i-butyl, n-amyl, i-amyl, cyclohexyl or phenyl radical. Among these substances only the last one decomposed spontaneously in anhyhrous state within a few days, while the other members were quite stable and unchanged after four months.The disulfides exhibited typical radical or polar cleavage reactions of the unit, since they dissolved in cold aqueous sodium sulfide to form sodium salts of the ditbiophosphoric acid with separation of free sulfur. In alcoholic silver nitrate, they separeted in the form of silver salts of the corresponding dithiophosphoric acids according to the following equation:With alcoholic mercuric chloride, the formation of a double salt instead of the cleavage of -S-S-bond was observed. A series of the double salts with the general formula were prepared, where R represents methyl, ethyl, i-propyi, n-butyl, i-butyl, i-amyl, cyclohexyl or phenyl radical.

本實驗研究了各類醇及酚与五硫化二磷的作用,各種一元醇,苯酚与β-萘酚与五硫化二磷生成相當的二硫代磷酸O,O-二烴基酯,但多元醇,氯代苯酚,硝基苯酚与五硫化二磷作用後,均未得預期的產物。本實驗合成了八種二硫代磷酸O,O-二烴基酯的汞鹽,九種雙(硫代磷酸O,O-二烴基酯)二硫物及八種二硫物的氯化汞複鹽。二硫物是一類比較活潑的化合物,其-S-S-鍵易被離子化藥劑所離解,同時呈一定的氧化性能。二硫物有失去一個硫原子的傾向,硫原子成為游離狀態析出或与金属成硫化物。

 
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