助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   linear 在 化学 分类中 的翻译结果: 查询用时:0.022秒
图标索引 在分类学科中查询
所有学科
化学
中药学
数学
药学
力学
自动化技术
电力工业
无线电电子学
电信技术
更多类别查询

图标索引 历史查询
 

linear
相关语句
  线型
    Studies on the IR Spectra of Some Linear Mo-Fe-S Clusters and the Relationship between the Spectra and Their Structure
    若干线型Mo—Fe—S簇合物红外光谱及其与结构关系的研究
短句来源
    NORMAL COORDINATE ANALYSIS ON THE DIANIONS FOR TWO LINEAR Mo-Fe-S CLUSTER FRAGMENT COMPOUNDS
    两种线型Mo-Fe-S原子簇元件化合物阴离子的简正坐标分析
短句来源
    STUDIES ON THE STRUCTURE AND MORPHOLOGY OF LINEAR POLYETHER POLYURETHANES
    线型聚醚聚氨酯结构与形态的研究
短句来源
    Synthesis of a Series of Linear Clusters [M_2M′S_4O_4] ̄(2-)and Relationship Between Spectra and Structure
    系列线型[M_2M′S_4O_4]~(2-)簇的合成及光谱与结构的关系(M=Mo,W;M′=Co,Mi,Fe)
短句来源
    Studies on Linear Heterotrimetallic M-E-M(M=Mo,W;E=Hg,Zn) Compounds──Synthesis,Properties and Structural Characterization of [η_5-RC_5H_4(CO)_3M]_2Zn(M=Mo,W;R=CO_2Me,CO_2Et)
    线型异核三金属M-E-M(M=Mo,W;E=Hg,Zn)化合物的研究──[η~5-RC_5H_4(CO)_3M]_2Zn(M=Mo,W;R=CO_2Me,CO_2Et)的合成、性质及结构
短句来源
更多       
  呈线性
    The linear relationship between the peak current and Norfloxacin concentration was found in the range of 4.0×10-9~4.0×10-7mol·L-1 with correlation coefficient of 0.996.The detection limit was found to be 1.0×10-9mol·L-1(S/N=3) with acummulation for 110 s.
    该氧化峰的二阶导数峰电流与诺氟沙星的浓度在4.0×10-9~4.0×10-7mol. L-1(富集90 s)范围内呈线性关系,相关系数为0.996,检出限为1.0×10-9mol.
短句来源
    The absorbance of catalytic and uncatalytic systems at 430 nm and 615 nm were measured. Under the optimum conditions,the linear range of the determination is 0-0.017 μg/mL. The linear regression equation is ΔA=35.70ρ(μg/mL)+0.037 56 with correlation coefficient of 0.998 8,and the detection limit is 9.2×10-11 g/L.
    在最佳实验条件下,铁的质量浓度在0~0.017μg/mL范围内与ΔA呈线性关系,ΔA=ΔA430+ΔA615,线性方程为ΔA=35.70ρ(μg/mL)+0.03756,r=0.9988,方法检出限为9.2×10-11g/L。
短句来源
    The linear range and detection limit for hydrogen peroxide is 0.02 ~0.4 μg/mL and 0.02 μg/mL,respectively.
    H2O2质量浓度在0.03~0.5 mg/mL范围内与吸光度降低值DA呈线性关系,检测限为0.02 mg/mL。
短句来源
    Results:The detection limit of the method was 0.034 μg/ml,the linear range was 0.01~1.00 mg/L,r=0.999,the recovery rate was 95.0%~106.4%,RSD of the result fell between 0.72% and 1.72%.
    在0.01~1.00 mg/L范围内呈线性关系,相关系数r=0.999; 回收率在95.0%~106.4%之间;
短句来源
    It was found that the enhanced LS intensities(ΔILS) were in proportion to the concentrations of ciprofloxacin in two ranges. The linear ranges of ciprofloxacin are 0.03~0.2 μg/mL and 0.2~2.5 μg/mL. The detection limits for ciprofloxacin are 7.4 and 2.7 ng/mL,respectively.
    LS光谱在385.0 nm处,具有特征散射峰,且增强的光散射强度(ΔILS)与0.03~0.2μg/mL,0.2~2.5μg/mL两个范围内的环丙沙星溶液呈线性关系,相对应的检出限分别为7.4,2.7 ng/mL。
短句来源
更多       
  “linear”译为未确定词的双语例句
    Study on Oligomerization of Ethylene to Linear Low Carbon α-olefins by ⅣB、Ⅷ Groups Metal Complexes
    ⅣB、Ⅷ族金属配合物体系催化乙烯齐聚合成直链低碳α-烯烃的研究
短句来源
    End Process in Chromatographic Column and Linear Relationship between Half Peak Width and Retention Time
    色谱柱末端过程与峰宽规律性
短句来源
    IR STUDY OF THE STRUCTURE OF THE CATALYST (MgCl_2/TiCl_4·THF/AlEt_3) FOR THE GAS-PHASE POLYMERIZATION TO PRODUCE LINEAR LOW DENSITY POLYETHYLENE
    气相法LLDPE催化剂(MgCl_2/TiCl_4·THF/AlEt_3)结构的红外光谱研究
短句来源
    The Modified H uckel Molecular Orbital Method (Ⅶ)——Studies on Linear Alternant Polyenes
    改进的Hückel分子轨道方法(Ⅶ)——关于直链交替烯烃的一些研究
短句来源
    DETERMINATION OF LINEAR ALKYLBENZENE-SULFONATES HOMOLOGOUS SERIES IN WATER BY HIGH PERFORMANCE LIQUID CHROMATOGRAPHY
    水中直链烷基苯磺酸盐同系物的高速液相色谱法测定
短句来源
更多       
查询“linear”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  linear
Reductive group actions on affine quadrics with 1-dimensional quotient: Linearization when a linear model exists
      
Such an action is called linearizable if it is equivalent to the restriction of a linear orthogonal action in the ambient affine space of the quadric.
      
A linear model for a given action is a linear orthogonal action with the same orbit types and equivalent slice representations.
      
We prove that if a reductive group action on an affine quadric with a 1-dimensional quotient has a linear model, then the action is linearizable.
      
We find presentations for the irreducible crystallographic complex reflection groupsW whose linear part is not the complexification of a real reflection group.
      
更多          


The viscosities of the binary solutions of n-butyl alcohol and N-ethylanilinehave been measured at 15.00℃ in an Ubbelohde viscometer.The fluidities of n-butyl alcohol and N-ethylaniline were found to be 29.61 and 39.05 rhes respec-tively,while the solution at ca.30 mole percent butyl alcohol shows a maximumfluidity of 41.10 rhes.This increase of fluidity probably results from the break-ing of association interactions between the hydroxyl bonds of butyl alcoholmolecules in the solution.Deviations from the linear...

The viscosities of the binary solutions of n-butyl alcohol and N-ethylanilinehave been measured at 15.00℃ in an Ubbelohde viscometer.The fluidities of n-butyl alcohol and N-ethylaniline were found to be 29.61 and 39.05 rhes respec-tively,while the solution at ca.30 mole percent butyl alcohol shows a maximumfluidity of 41.10 rhes.This increase of fluidity probably results from the break-ing of association interactions between the hydroxyl bonds of butyl alcoholmolecules in the solution.Deviations from the linear additivity of fluidities arepositive for all concentrations.The experimental data can be represented fairlywell by an equation similar to that proposed by Eyring,i.e.φ=((?)/Nh)exp(-(x_1△F_1+x_2△F_2+Bx_1x_2/RT))with the parameter B=-374 cal/mole,and equally well by the equation of vander Wyk:logφ=x_1~2 logφ_1+x_2~2logφ_2+B'x_1x_2with the parameter B'=3.363.

正丁醇—N-乙基苯胺雨元溶液在15.00℃时的粘度,已被测定。这溶液的流度在正丁醇的分子浓度是30%时,呈现一最大值。溶液的流度增高,可能是由于正丁醇分子聚合的离解所致。实验数据可以相当满意地用类似 Eyirng 所提出的雨元溶液粘度公式或 van der Wyk 的公式来表示。

The effect of shear rate on the viscosity of polymethylmethacrylate in benzene was studied at 25℃ by means of an Ubbelohde dilution viscometer under external hydrostatic pressure. Four fractionated and one unfractionated samples having molecular weights ranging from 4×10~5-5×10~6 were used for measurement. The maximum shear rate at the capillary wall varied in the range 500-8000 sec~(-1). We treated our experimental data by a power law rheological function, from which the polymer solutions show non- Newtonian...

The effect of shear rate on the viscosity of polymethylmethacrylate in benzene was studied at 25℃ by means of an Ubbelohde dilution viscometer under external hydrostatic pressure. Four fractionated and one unfractionated samples having molecular weights ranging from 4×10~5-5×10~6 were used for measurement. The maximum shear rate at the capillary wall varied in the range 500-8000 sec~(-1). We treated our experimental data by a power law rheological function, from which the polymer solutions show non- Newtonian behavior, except one sample having lowest molecular weight (M=4×10~5). Flow curves were also deduced directly from the efflux times according to the theory of Weisenberg. For the non-Newtonian polymer solution, the relative viscosity η_r~t is defined as the ratio of the maximum shear rate D_R of the Newtonian solvent to that of the non-Newtonian solution under the same maximum shear stress S_R. The values of η_r~t so obtained show that the extrapolation of ln η_r~t or other functions of η_r~t toward D_R→0 is not practical, because the data deviate more from the linear extrapolation when D_R gets smaller. Two definitions of intrinsic viscosity for the non-Newtonian polymer solution were considered: (1) For a given value of D_R, (?); (2) for a given value of (?). These two definitions become identical for a Newtonian solution. Our experimental data show that, at given D_R, lnη_r~l/C plots are linear, while (η_r~l-1)/C plots are curved; at given S_R, both (lnη_r~l /C)-C and ((η_r~l-1)/C)-C plots are linear and give the same intercept on extrapolation to zero concentration. The values of [η]_D and [η]_s decrease with increasing D_R or S_R, and the change is more pronounced at low values of D_R or S_R, so that neither the extrapolation of [η]_D toward D_R→0 nor that of [η]_s toward S_R→0 is practical. In such cases, we propose the use of [η]_D at D_R=3000 sec~(-1) or [η]s at S_R = 25 dyne/cm~2 for the viscometric molecular weight determination of the polymer.

作者用毛細管粘度計,在外加水柱壓力下,測定了聚甲基丙烯酸甲酯的四個經分級的試樣(M=4×10~5-5×10~6)和一個未經分級的試樣(M=5×10~6)在25°時苯溶液粘度的切變速度依賴性。在毛細管管壁的切變速度D_R,變化在500-8000秒~(-1) 的範圍內。對實驗數據首先試用了冪函數形式的流變函數來處理,除M=4×10~5的一個試樣外,溶液粘度都有切變速度依賴性。作者也依照Weisenberg的方法,從實驗數據作出了流變曲線。同時把非Newton溶液對Newton溶劑的相對粘度(η_r)′(在毛細管管壁切變應力S_R下)下定義為:(η_r)′=D_R(溶劑)/D_R(溶液)這樣得到的(η_r)′,除M=1.5×10~(-6)的一個試樣外,In(η_r)′可向D_R→0作線性外推外。對其他數據來說,這樣的外推都是不可能的,因為在D_R值愈小時,離線性的偏差愈大。有切變速度依賴性的高分子溶液,可以有二種方式來給特性粘數下定義:(1)在給定D_R值時,(?);(2) 在給定S_R值時,[η]_S=。祇有Newton液體,以這二種不同方式定義的特性粘數是等值的。作者得到的實驗數據在給定D_R值時,In(η_r...

作者用毛細管粘度計,在外加水柱壓力下,測定了聚甲基丙烯酸甲酯的四個經分級的試樣(M=4×10~5-5×10~6)和一個未經分級的試樣(M=5×10~6)在25°時苯溶液粘度的切變速度依賴性。在毛細管管壁的切變速度D_R,變化在500-8000秒~(-1) 的範圍內。對實驗數據首先試用了冪函數形式的流變函數來處理,除M=4×10~5的一個試樣外,溶液粘度都有切變速度依賴性。作者也依照Weisenberg的方法,從實驗數據作出了流變曲線。同時把非Newton溶液對Newton溶劑的相對粘度(η_r)′(在毛細管管壁切變應力S_R下)下定義為:(η_r)′=D_R(溶劑)/D_R(溶液)這樣得到的(η_r)′,除M=1.5×10~(-6)的一個試樣外,In(η_r)′可向D_R→0作線性外推外。對其他數據來說,這樣的外推都是不可能的,因為在D_R值愈小時,離線性的偏差愈大。有切變速度依賴性的高分子溶液,可以有二種方式來給特性粘數下定義:(1)在給定D_R值時,(?);(2) 在給定S_R值時,[η]_S=。祇有Newton液體,以這二種不同方式定義的特性粘數是等值的。作者得到的實驗數據在給定D_R值時,In(η_r)′/C對C的圖,線性是好的;但((η_r)′-1)/C對C的圖是彎曲的。在給定S_R值時,ln(η_r)′/C或((η_r)′-1)/C對C的圖都呈線性, 而且其外推值相同。[η]_D和[η]_S都隨D_R或S_R的增加而減少,向D_R→0或S_R→0的外推,都是不可能的;因為在低D_R或S_R值時,變化更大。根據這些結果,我們建議用D_R=3000秒~(-1)時的[η]_(D=3000) 或用S_R=25達因/厘米~2時的[η]_(S=25)來做粘度平均分子量的量度。在應用[η]_(S=25) 的數據時,假若用t_r=t/t_0。來代替(η_r)′(t_r與(η_r)′在溶液的非Newton程度不大時,相差很小),那末祇要在一個給定外加壓力下測定,可以達到快捷的要求。

Although James and Coolidge (1933) solved the molecular hydrogen problem in almost complete agreement with experiment by using a 13-term 2-electron eigenfunction, his method can hardly be applied to more complex molecules. For this and other reasons (Coulson, 1938), it is still desirable to obtain a good one-electron eigenfunction, i.e., molecular orbital, for the hydrogen molecule. The best molecular orbital treatment available in the literature was given by Coulson (1938), who used a trial eigenfunction in...

Although James and Coolidge (1933) solved the molecular hydrogen problem in almost complete agreement with experiment by using a 13-term 2-electron eigenfunction, his method can hardly be applied to more complex molecules. For this and other reasons (Coulson, 1938), it is still desirable to obtain a good one-electron eigenfunction, i.e., molecular orbital, for the hydrogen molecule. The best molecular orbital treatment available in the literature was given by Coulson (1938), who used a trial eigenfunction in elliptical coordinates involving 5 parameters and obtained 3.603 eV for the binding energy of H_2, which is to be compared with the ex- perimental value of 4.72 eV. In the present investigation we have proposed a new type of trial eigenfunction for the molecular orbital: (1) with p = centers a, b, g, c, d,…… i = electron 1 or 2 (2) where the p's are centers along the bond axis a-b (Fig. 1). In this simple problem both the Fock and Hartree methods yield the same result. The molecular orbital ψ must satisfy the following integral equation: (3) where ε is the energy of the molecular orbital, F is the Fock operator which is equal to H+G(1), while H is the one-electron Hamiltonian operator: H = -1/2▽~2-1/r_a-1/r_b (4) and G(1) is the interaction potential (5) Substituting (1) into (3), we obtain the linear combination coefficients c_p, which must satisfy the following secular equation: (6) where is the solution of the secular determinant and The F_(pq)'s are not at first known, but depend upon the c_p's. A method of successive approximation must therefore be adopted. A set of c_p values may be assumed, the F_(pq)'s calculated, the secular determinant (7) solved, and a new set of c_p values found. This process is repeated until a "self-consistent" set of c_p values is obtained. The above procedure was first proposed by Roothaan (1951), not for H_2 but for more complex molecules. It was called by him the "LCAO SCF (linear combination of atomic orbitals self-consistent field) method". The new feature of the present investigation is that we not only use LCAO but also LCNAO (linear combination of non-atomic orbitals, such as x_g, x_c, x_d, …). The order of secular determinant (7) may be reduced to half if we replace the eigen- functions x_a, x_b .... by their symmetrical and anti-symmetrical linear combinations x_a + x_b and x_a-x_b. Numerical calculations have been carried out both for the three- and the two-centered molecular orbitals. The three-centered molecular orbital is (10) (11) where S_(ab) and S(ag) are the overlapping integrals between x_a and x_b, and between x_a and x_g respectively. The parameters a and g have 'been obtained to give minimum energy by the method described above. They are a=l.190, g=0.22, and the binding energy is 3.598 eV, which is almost as good as that obtained by Coulson (3.603 eV) using a trial function of 5 parameters. The two-centered molecular orbital is (12) (13) which gives a maximum binding energy of 3.630 eV for a=1.190 and R~(ac)=R(bd)=0.105 (Fig. 1). This result is 'better than Coulson's. If we allow different values for the ex-ponent α in x_a and x_g in equation (11), or if we use a four-centered molecular orbital, such as ψ=a(x_a + x_b) + b(x_c + x_d) with four parameters, namely α_a=α_b, α_c=α_d, R_(ac)=R_(bd) and the ratio b/a, it is possible to obtain a still better result. Extension of the present method to the treatment of more complex molecules is now under investigation.

(1)討論了用自洽勢場多中心分子軌道法來處理H_2分子的一般方法。 (2)用僅含兩個參變數三中心分子軌道進行了具體計算,求得H_2分子的結合能為3.598eV,接近於Coulson用五個參變數的雙中心分子軌道所得的結果(3.603eV)。 (3)用不在原子核上的兩中心的分子軌道求得H_2分子的結合能為3.630 eV,此上述結果為好。並指出如用不同的α值和四個或四個以上中心的分子軌道,很有可能得到更好的結果。以上處理方法有可能推廣到比H_2更為複雜的分子。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关linear的内容
在知识搜索中查有关linear的内容
在数字搜索中查有关linear的内容
在概念知识元中查有关linear的内容
在学术趋势中查有关linear的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社