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  新型
     The Study on Polyolefin Nano-composites and New Type Catalysts for Olefin Polymerization
     聚烯烃纳米复合材料及新型烯烃聚合催化剂的研究
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     A NEW TYPE OF DRILL AND ITS GRINDING TECHNOLOGY
     一种新型钻头及其刃磨技术的研究
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     A New Type of Grouting Liquid of Stable Grout And Hydraulic Concrete with Compound Admixture
     稳定灌浆新型浆液与复合掺合料水工混凝土
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     Studies on the Action Mechanism of New Type Enzyme Preparations on Improving the Baking Quality of Wheat Flour and Its Application
     新型酶制剂改良小麦粉烘焙品质的机理及其应用研究
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     Studies on the New Type Bio-composites of Calcium Phosphate System for Bone Prosthesis
     磷酸钙系新型骨修复复合材料的研究
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  种新型
     A NEW TYPE OF DRILL AND ITS GRINDING TECHNOLOGY
     一种新型钻头及其刃磨技术的研究
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     Studies of the Properties of a New Type of Laser-Driven Accelerator
     一种新型激光加速器的特性研究
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     A NEW TYPE OF DEFECT LATTICE IN THE Al-Ni SYSTEM
     Al-Ni二元系中一种新型缺陷点阵
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     A New Type Self-Hardening Sand Mixture Using the Reducing Slag as the Main Bonding Agent
     一种新型自硬砂——炉渣自硬砂
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     A NEW TYPE HIGH-TEMPERATURE DRYING KILN FOR LUMBER
     一种新型高温木材干燥窑
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  新型的
     A NEW TYPE OF CONTINUOUS SOLID SOLUTIONS ——THE VARIATION OF CRYSTAL STRUCTURE TYPES OF Mg_x/2Li_1-x IO_3 WITH COMPOSITION
     一种新型的固溶体——Mg_(x/2)Li_(1-x)IO_3晶体结构随成分的变化
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     Synthesis of a New Type Nitrogen-Containing Crown Ether Compounds
     一种新型的含氮冠醚化合物的合成
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     A NEW TYPE POLAR PLOT DISPLAY MICROWAVE INTERFERENCE SYSTEM
     一种新型的极化显示的微波干涉系統
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     DIWA-TYPE YT WULFENITE DEPOSIT: A NEW TYPE OF MOLYBDENUM DEPOSIT
     地洼型YT钼铅矿床—一种新型的钼矿床
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     A NEW TYPE COPPER STABILISED MULTIBILAMENTARY Nb_3Sn SUPERCONDUCTOR——A STUDY OF Nb-PHOSPHORUS BRONZE REPLACING Ta AS A DIFFUSION BARRIER
     一种新型的铜稳定多芯Nb_3Sn超导材料——用Nb-P青铜代钽作扩散阻挡层的研究
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  新类型
     INHERITANCE OF NEW TYPE OF SBTi-A_2 IN SEED PROTEIN OF SOYUEAN (G.max) IN CHINA 1. Genetic rule of Ti ̄b×Ti ̄x(new type) F_2 seeds
     中国大豆(G.max)种子蛋白SBTi—A_2电泳谱带新类型的遗传研究──ⅠTi~b型×Ti~x型(新类型)F_2种子的遗传规律
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     Au-Se ore formation——a new type of stratabound gold deposit
     Au—Se矿石建造——层控金矿床的一种新类型
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     There are three mechanisms to transfer information in HTTP: RFC1867,PUT and WebDAV, among which a new type of information is introduced in RFC1867 that is File and the object of ADO Stream.
     在HTTP中上传文件有三种机制:RFC1867,PUT和WebDAV,常采用在RFC1867中引入的一个新类型:File以及ADOStream对象。
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     Based on the analysis of IR, 1H NMR, 13 C NMR, MS and spectral analysis of their derivatives, they were identified as a new type of annonaceous acetogenins——seco bistetrahydrofuran annonaceous acetogenins.
     根据它们的IR、1H-NMR、13C-NMR、MS分析及衍生物光谱分析,它们均属番荔枝内酯的新类型——裂双四氢呋喃型番荔枝内酯。
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     A new type of polarographic catalytic wave of organic compound, termed as association/parallel catalytic hydrogen wave, has been reported.
     报道了有机化合物极谱催化波的一种新类型———缔合 /平行催化氢波 .
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  new type
New type Paley-Wiener theorems for the modified multidimensional Mellin transform
      
New type Paley-Wiener theorems for the modified multidimensional Mellin and inverse Mellin transforms are established.
      
Based on the combination of fractional calculus with fractal functions, a new type of functions is introduced; the definition, graph, property and dimension of this function are discussed.
      
A set game, in which the worth of a coalition is expressed by a set instead of a real number, is a new type of cooperative game.
      
The conic model method is a new type of method with more information available at each iteration than standard quadratic-based methods.
      
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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。

A new type all-glass osmometer of very simple construction using asintered glass cylinder as rigid support for de-nitrated collodion membrane isdescribed. The solvent is put inside the osmotic cell and the solution outside.Not more than 10 ml of solution is needed for a determination, while theamount of solvent used is extremely small. No special technique is requiredfor the manipulation of the osmometer. It is especially suited for theosmometric studies with mixed solvents, for very viscous solutions...

A new type all-glass osmometer of very simple construction using asintered glass cylinder as rigid support for de-nitrated collodion membrane isdescribed. The solvent is put inside the osmotic cell and the solution outside.Not more than 10 ml of solution is needed for a determination, while theamount of solvent used is extremely small. No special technique is requiredfor the manipulation of the osmometer. It is especially suited for theosmometric studies with mixed solvents, for very viscous solutions and formeasurements at several temperatures. A polymethylmethacrylate fraction (M_n=6.3×10~5) was dissolved invarious mixtures of toluene-ethanol for osmometric and viscometric studies.Osmotic pressure data show that the value of A_2 goes through a maximum atthe volume fraction of ethanol γ= 0.17, and γ(A_2= 0) = 0.67 estimated fromthe initial slopes of the л/C vs C plots which are appreciably curved. The values of intrinsic viscosity also show a maximum at γ= 0.17, and inthe whole range of the mixed solvents the values of [η] and A_2 are symbatic.The solution viscosity shows slight shear rate dependence, and the deviationfrom Newtonian flow is greatest arround γ= 0.17 and becomes very smallnear the precipitation point, which occurs at γ(c= 1.10~(-3)g/cm~3)= 0.68_2. The experimental results indicate that the polymer coil is most expandedat γ= 0.17, where A_2 and [η] values are at their maximum and the solutionviscosity shows greatest shear rate dependence. This seems reasonable as thecohesion energy density of polymethylmethacrylate (12.2) lies between those oftoluene (8.94) and ethanol (12.80).

作者等使用一种全部由玻璃制成的管形渗透计,半透膜用硝化纤维素溶液涂在熔结玻璃筒的外面,经脱硝基处理后使用。玻璃筒内置溶剂,筒外置溶液。这种渗透计构造简单,操作简便,特别适合于对混合溶剂、粘度大的溶液和在几个温度下的渗透压测量。聚甲基丙烯酸甲酯一个级份(M_n=6.3×10~5)在甲苯-乙醇溶液里的渗透压和粘度数据(25°)指示γ=0.17(沉淀剂的体积分数)时A_2和[η]都呈现最大值。各溶液的粘度都微有切变速度依赖性,与牛顿流动的偏差亦在γ=0.17附近最大。在C=1×10~(-3)克/厘米~3时的沉淀点γ=0.68_2。

In recent years, Prestressed Concrete long piles are universally adopted. Last year such kind of pile with length up to 27~M have been produced in this country. Now in order to meet the requirements of Shanghai Harlour works and Yangtze River Bridges, we work out a new type of prestressed concrete hollow pile of 36~M long, with a cross-section, of 55 cm square (inner diameter 40 cm.) By using temporary prestressing fittings on pick points with automatic adjustment for prestress, the pile is suitable for...

In recent years, Prestressed Concrete long piles are universally adopted. Last year such kind of pile with length up to 27~M have been produced in this country. Now in order to meet the requirements of Shanghai Harlour works and Yangtze River Bridges, we work out a new type of prestressed concrete hollow pile of 36~M long, with a cross-section, of 55 cm square (inner diameter 40 cm.) By using temporary prestressing fittings on pick points with automatic adjustment for prestress, the pile is suitable for two points pick, which gives great facilities to handling and transpotation. Besides, 18% of steel saving can still be made. This paper only presents the principle and calculations. The testing results will be given later.

年来预应力混凝土长桩在各国已广泛采用,我国在去年大躍进中亦已试行生产应用,长达27公尺,最近我校预应力混凝土桩科研小组在响应党的的科研结合生产的号召下,为上海码头工程及长江大桥工程进行36公尺的预应力混凝土长桩研究,并提出一种新的型式,既可节省18%的钢筋又可允许用两点吊运,这将给予施工方面极大便和。现在与上海筑港局协作进行试制与试验,兹特将原理部分报导,希望大家提出意见以便修正改进,至其试验报告则将于以后陆续发表。

 
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