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magnetic
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  磁性
    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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    Preparation of Magnetic Polymer Microspheres
    磁性聚合物微球的制备
短句来源
    Application of Functional Magnetic Nanoparticles in Immunoassay and Study of Biosensor
    纳米磁性功能微球在免疫分析中的应用及生物传感器的研究
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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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    Synthesis, Structure and Magnetic Properties of Rare Earth-transition Metal Heteronuclear Complexes
    稀土—过渡金属杂多核配合物的合成、结构及磁性研究
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  “magnetic”译为未确定词的双语例句
    ANALYSIS OF NUCLEAR MAGNETIC RESONANCE SPECTRA IN 2-CHLORO-6-TRICHLOROMETHYL PYRIDINE
    2-氯-6-(三氯甲基)吡啶核磁共振谱的解析
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    Nuclear Magnetic Resonance Study of Some Substituted Benzothiazepines——Ⅱ.~(13)C Nuclear Magnetic Resonance Spectra
    氢化苯骈硫氮杂(艹卓)核磁共振谱的研究 Ⅱ、~(13)C核磁共振谱
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    STUDIES ON THE APPLICATION OF ELEMENTO-ORGANIC COMPOUNDS OF THE FIFTH AND SIXTH GROUPS IN ORGANIC SYNTHESES Ⅶ. PROTON MAGNETIC RESONANCE SPECTRA OF TRISUBSTITUTED CYCLOPROPANE
    第五、六族元素的有机化合物在有机合成中应用的研究——Ⅶ.三取代环丙烷的质子核磁共振谱研究
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    ~(13)C Nuclear Magnetic Resonance of Diterpenoid Alkaloids
    二萜生物碱的~(13)C核磁共振谱
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    DETERMINATION OF GARAMINE PK_a BY CARBON-13 NUCLEAR MAGNETIC RESONANCE
    用碳-13核磁共振法测定加纳霉胺的Pk_a值
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  magnetic
In the second part, where we explore connections with Maxwell's equations, the main novelty is the treatment of the corresponding electro-magnetic boundary value problem by recasting it as a 'half' Dirichlet problem for a suitable Dirac operator.
      
At the end of the article, the method is tested on real magnetic field data measured by the German geoscientific research satellite CHAMP.
      
The stereo-structures of Roridin P and Isororidin P were established on the basis of one- and two-dimensional nuclear magnetic resonance (NMR) spectral analyses.
      
The synthesized compounds have been characterized on the basis of elemental analyses, infrared spectroscopy (IR), and nuclear magnetic resonance (NMR).
      
Two compounds were designed, synthesized, and characterized by 1H-nuclear magnetic resonance (1H-NMR), ultraviolet (UV)-visible, and matrix-assisted laser desorption/ionization (MALDI) mass spectra.
      
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The nature of the chemical bond in conjugate triatomic molecules such as ClO2, O3, SO2, NO2, CO2, N3-, NO2+, N2O, HgCl2, etc. has been discussed from the point of view of the molecular orbital theory. It has been demonstrated quantum mechanically that the conditions of forming a conjugate π bond are: (1) Each atom of the AB2 molecule has a p orbital of approximately equal energy and parallel to one another; (2) the total number of p electrons must be less than two times the number of p orbitala. Triatomic molecules...

The nature of the chemical bond in conjugate triatomic molecules such as ClO2, O3, SO2, NO2, CO2, N3-, NO2+, N2O, HgCl2, etc. has been discussed from the point of view of the molecular orbital theory. It has been demonstrated quantum mechanically that the conditions of forming a conjugate π bond are: (1) Each atom of the AB2 molecule has a p orbital of approximately equal energy and parallel to one another; (2) the total number of p electrons must be less than two times the number of p orbitala. Triatomic molecules with 16 to 19 valence electrons fulfil these conditions, hence they are conjugate molecules. Two styles of writing the structural formulas of such molecules are proposed as shown in the following table:where the dotted lines in type (Ⅰ) formulas represent the conjugate π bonds, while the symbol Ⅱnm means that the π bond involves m electrons and n atoms. The m electrons will fill the bonding, nonbonding and anti-bonding molecular orbitals successively, so that the bond orders of Ⅱ35,Ⅱ34 and Ⅱ33 are 1/2, 1 and 1 respectively. Intype (Ⅱ) formulas, the dots in each rectangular block represent electrons forming a conjugate π bond, while those outside are non-bonding electrons, and the valence electrons of each atom may be clearly counted. The observed bond angles, bond distances, dipole moments and magnetic susceptibilities of AB2 molecules are listed and compared with those expected from their structural formulas.

本文用分子轨道法处理了AB_2型无机共轭分子的结构,讨论了形成大π键的条件,具体分析了具有16至20个价电子的AB_2型分子的结构和性质,提出结构式的两种写法。

The stability of complex compounds formed by N-phenylglycine and N-α-naphthylglycinewith copper(Ⅱ)and nickel(Ⅱ)has been investigated.The stepwise formation constantsof these complexes were determined potendometrically at 25℃ in 30% ethanol solution inpresence of 0.10 M sodium perchlorate.For the purpose of comparison,glycine was alsoinvestigated under the same conditions.It was found that the stability of the nickelchelates is in accord with the base strength of the amino acids,and these chelates shouldhave...

The stability of complex compounds formed by N-phenylglycine and N-α-naphthylglycinewith copper(Ⅱ)and nickel(Ⅱ)has been investigated.The stepwise formation constantsof these complexes were determined potendometrically at 25℃ in 30% ethanol solution inpresence of 0.10 M sodium perchlorate.For the purpose of comparison,glycine was alsoinvestigated under the same conditions.It was found that the stability of the nickelchelates is in accord with the base strength of the amino acids,and these chelates shouldhave tetrahedral configurations,as evidenced from magnetic susceptibility measurements.The copper complexes are normally coplanar in structure.However,copper-N-α-naphthyl-glycinate showed abnormally low stability,indicating the existence of considerable sterichindrance,which effect forced the complex to change its structure from square planar toa distorted configuration,possibly tetrahedral.The effect of lowering dielectric constant of the solvent on the stability of the complexcompounds was reflected by the fact that the complexes are more stable in 30% ethanolsolution than in water.

N-苯氨基乙酸和 N-萘氨基乙酸与铜(Ⅱ)和镍(Ⅱ)在25℃时生成络合物的逐级生成常数曾用电势滴定法予以测定。实验在30%(体积)乙醇溶液中及有0.10M 高氯酸钠存在下进行。为便于比较,也在相同条件下测定氨基乙酸与铜和镍的络合物。N-苯氨基乙酸络合物的稳定性最小,由于络合剂的硷性太弱之故。实验结果表明镍的络合物具四面体结构,N-萘氨基乙酸镍的顺磁性亦证明此点。铜(Ⅱ)与氨基乙酸和 N-苯氨基乙酸的络合物为平面型结构(dsp~2,共价键),但 N-萘氨基乙酸铜却因位阻效应而改变其平面型结构,可能为四面体或变形的 dsp~2型结构。在30%乙醇溶液中,由于溶剂的介电常数降低,络合物的稳定性增强。

(1) The electrical resistivity, magnetic susceptibility and thermal stability of the solid polymeric complex of cupric dithiooxamide have been studied. It was found that the electrical resistivity and the activition energy of electrical conduction of the solid complexes prepared under different conditions were different, those (RCu—W) prepared in water-alcohol solution having σ_(30)°=5×10~6 Ωcm, E_α=0.44 ev and those (RCu—A) prepared in absolute alcohol having σ_(30)°=3×10~8Ωcm, E_α=0.65ev. (2) The results...

(1) The electrical resistivity, magnetic susceptibility and thermal stability of the solid polymeric complex of cupric dithiooxamide have been studied. It was found that the electrical resistivity and the activition energy of electrical conduction of the solid complexes prepared under different conditions were different, those (RCu—W) prepared in water-alcohol solution having σ_(30)°=5×10~6 Ωcm, E_α=0.44 ev and those (RCu—A) prepared in absolute alcohol having σ_(30)°=3×10~8Ωcm, E_α=0.65ev. (2) The results of thermogravimetric analysis and x-ray diffraction measurements showed that the solid complex (RCu—W) was micro-crystalline and fairly stable toward heating up till 160℃, when it began to decompose, the first product of decomposition being α—Cu_(1.8)S which on further heating converted to CuO. (3) The results of magnetic susceptibility measurements showed that the solid complex (RCu—W) had a specific magnetic susceptibility x_s=0.7359×10~(-6) (21℃) and magnetic moment of 0.70 B.M. This value is far below that of Cu~(2+) (d~9) (1.73 B. M.), probably due to the fact that cupric atoms in the complex formed conjugated π bonds with the ligands.

(1)本文研究了二硫代乙二酰胺合铜螯聚物的电阻率,电阻温度关系,热稳定性和磁化率。結果表明不同条件制备的固体絡合物的电阻率(ρ)和电导活化能(E_α)是不同的。在水与乙醇混合溶剂中制备的产物(RCu—W)为ρ_(30°)=5×10~6Ωcm;E_α=0.44ev,。而在无水乙醇中制备的产物(RCu—A)为ρ_(30°)=3×10~8Ωcm:E_α=0.65ev。 (2)热重量分析和x射綫粉末衍射測定的結果表明固体絡合物(RCu—W)是微晶体。它在加热到160℃以后分解,第一个分解产物是α—Cu_(1.8)S,随着进一步加热又轉变成CuO。 (3)磁化率的測定結果表明固体絡合物(RCu—W)的比磁化率为x_g=0.7359×10~(-6)(21℃),計算成磁矩为0.70波尔磁子,较Cu~(2+)(d~9)的理論值(1.73波尔磁子)要低很多,这可能由於螯聚物中銅原子与配体生成π鍵而使整个螯聚物形成共轭体系,使磁矩大大降低。

 
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