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spheres
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     Preparation of Silica and SiO_2/TiO_2 Hollow Spheres using Supercritical CO_2
     用超临界CO_2合成SiO_2/TiO_2空心
     Preparation of SiO_2,TiO_2,SnO_2 hollow spheres by colloidal carbon spheres
     利用胶体碳为模板制备SiO_2、TiO_2、SnO_2空心
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     Preparation of Hollow Carbon Spheres by Catalytic Pyrolysis of C_2H_2
     催化裂解C_2H_2制备空心碳
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     Reaction rates of 27Al(n,α)24Na, 197Au(n,2n) 196Au and 197Au(n,γ) 198Au reactions in Be/PE/Fe combined spheres bombarded by central DT neutrons were measured by activation foil method with a HPGe detector.
     用HPGe探测器和活化箔法测量了DT中子照射下27Al(n,α)24Na、187Au(n,2n)196Au、197Au(n,γ)198Au反应在铍/聚乙烯/铁组合中的活化率。
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     The main results were as follows:1. Hollow Ag_2S spheres had been prepared via hydrolyze reaction of Ag_2S_2O_3, which formed from the reaction of AgNO_3 with Na_2S_2O_3, in cyclohexane/water/polyglycol emulsion system.
     1.用聚乙二醇/环已烷/水形成水包油乳浊液体系,使由AgNO_3和Na_2S_2O_3形成的硫代硫酸银在该体系中超声水解,方便地制得了Ag_2S空心
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  “spheres”译为未确定词的双语例句
     Preparation, Self-Organization and Properties of SiO_2/Ag/SiO_2 Submicrometer Core-Shell Spheres for Photonic Crystals
     光子晶体用SiO_2/Ag/SiO_2核壳结构亚微米微球制备与性能研究及其自组装
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     The Relative Equivalence of Separating Curves on Surfaces and Its Applications to Haken Spheres
     曲面上分离曲线的相对等价及其在Haken球面理论中的应用
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     ON A SEPARATED SUBSETS OF SPHERES OF NORMED LINEAR SPACES
     关于线性赋范空间的单位球面的λ分离子集
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     TWO SUFFICIENT CONDITIONS THAT WEIGARTEN SURFACE ARE SPHERES
     Weingarten曲面为球面的两个充分条件
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     EXPERIMENTAL STUDY OF HEAT TRANSFER AROUNDHEATING SPHERES IN TANDEM
     发热固体大颗粒间绕流的传热实验研究
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  相似匹配句对
     Titania Mesoporous Spheres
     二氧化钛介孔球
     On the Studies ofWonen's Spheres
     “妇女领域”研究述评
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  spheres
In some of the examples the limit sets are wildly knotted 2-spheres.
      
For a smooth oriented surface Σ, denote byM(Σ) the set of all ways to represent Σ as a result of gluing together standard spheres with holes ("the Lego game").
      
As a special case one obtains modulation spaces and Gabor frames on spheres.
      
Based on these facts we treat aspects of nonlinear approximation and show how the new theory can be applied to the Gabor transform on spheres.
      
Several theorems on the finiteness of energy for quasi-harmonic spheres are proved, some counter-examples which state that the energy of quasi-harmonic sphere may be infinite are given.
      
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The quantized energy values of an electron enclosed in a spherical box are calculated by solving Schrodinger's wave equation. The energy levels are very close together if the sphere is of ordinary dimensions. But as the radius of the sphere decreases toward atomic dimensions, the value of every energy level increases and the spread between the levels also increases.

本文以波力学讨论电子在球形范围内运动时之情况。由计算得知。如球形大时,则电子之能层甚为密接,如球形之半径缩小至原子大小之程度,则其每一能层之值增大而能层与能层间之间隔亦增大。

A new method is proposed in this paper for the evaluation of the following three important kinds of three-center and four-center integrals needed in molecular quantum mechanics: (1) (2) (3) Obviously, integral (2) is a special case of integral (3), so we need only to evaluate the first and the third. The following equations have been obtained for the evaluation of the above-mentioned two kinds of integrals (4) (5) where (6) (7) (8) (9) R_0 in equation (4) is the distance of point a apart from the origin located...

A new method is proposed in this paper for the evaluation of the following three important kinds of three-center and four-center integrals needed in molecular quantum mechanics: (1) (2) (3) Obviously, integral (2) is a special case of integral (3), so we need only to evaluate the first and the third. The following equations have been obtained for the evaluation of the above-mentioned two kinds of integrals (4) (5) where (6) (7) (8) (9) R_0 in equation (4) is the distance of point a apart from the origin located in bc line, while that in equation (5) is the distance between the two chosen origins separately located in ab and cd lines. θ_0 is the angle made byand, and θ_(10), θ_(20) and θ_(12) are respectively the angles made by and,and,and, The fourth term of equation (5) is, in general, negligible except in the case of R_0, which is less than two Bohr units. We propose two methods for the evaluation of and : the first one is to choose the origin at the end-point of the bond and evaluate the integral strictly inside and outside the sphere of radius, while the second one is to choose the origin at the mid-point of the bond and evaluate its value inside and outside the ellipsoid passing through the end-point of. The calculation involved in the second method is quite simple and, of course, a small error is introduced in changing the region of integration from the sphere to the ellipsoid, but it is quite negligible in comparison with the result of our first method. Equation (4) is exact in all cases, while equation (5) is exact in many cases but also involves certain errors in some other cases. From our actual calculations, we draw the conclusion that equation (5) is almost exact in the evaluation of integrals L_(aa, bc) and L_(ab, cd) and that certain error is involved in the evaluation of integral L_(ab, bc), but the error introduced does not exceed ten per cent.

在本篇文章中,我們建議了一種新方法來計算量子力學中的三中心和四中心積分;這方法此以往的好,因為計算簡單,應用廣闊,結果也比較可靠。我們用來計算三中心吸引能的公式[方程(5)]是在任何情况下都是正確的,而用來計算三中心和四中心的排斥能積分公式[方程(18)]在某些情况下是正確的,在另一些情况却能引進一些誤差。在計算非相隣鍵的積分時引進的誤差很小,可以忽略不計;在計算相隣鍵的積分時引進的誤差此較大,但不超過百分之十。我們建議兩種計算A_u和B_u的方法,一種方法是以鍵的一個端點爲原點,嚴格按照球內外的區域積分;另一種方法是以鍵的中點為原點,按照橢圓體的內外區域積分。前一種方法理論上嚴密,然而後一種方法計算簡單,收斂性快,引進的誤差也不大;尤其在計算相隣鍵的三中心排斥能的積分時,似乎後一方法得到的結果還比前一方法好。在本文中,為了容易說明起見,常常引用吸引能和排斥能這兩個名詞,實際我們的方法,是用來計算下列三類積分:它們不僅包括吸引能和排斥能積分,也把交换積分包括在內,甚至可以在更廣泛的意義上看待上列積分。若σ_1,σ_2也是Φ_1和Φ_2的函數時,仍可以用我們的一般展開理論處理,不過要此本文複雜。

In this paper we discuss (1) the transport of air masses between hemispheres, and (2) transport between oceans and continents in northern hemisphere.It is found, (1) that the quantity of air mass transport between two hemispheres is much greater than the mass transport between continents and oceans, (2) that generally from January to July the total air mass of northern hemisphere is gradually decreased and the total transport of air in this period to southern hemis-sphere is about 10.3 × 1018 grams, (3)...

In this paper we discuss (1) the transport of air masses between hemispheres, and (2) transport between oceans and continents in northern hemisphere.It is found, (1) that the quantity of air mass transport between two hemispheres is much greater than the mass transport between continents and oceans, (2) that generally from January to July the total air mass of northern hemisphere is gradually decreased and the total transport of air in this period to southern hemis-sphere is about 10.3 × 1018 grams, (3) that the mass transport between hemisphere is greatest during the period from May to June and from October to November, (4) that the amount of monthly mass transport between two hemispheres is determined by the amount of mass variation over Eurasian area, and (5) that the positive deviation from normal of total amount of air mass over Asia accompanies with cold weather while negative deviation accompanies with warm weather over same continent.

本文根据1930-1939年间北半球逐月海平面平均气压图,计算逐月之间南北两半球大气质量的输送,以及北半球海洋区与大陆区之间的大气质量输送。本文获得以下几点主要的认识: (1)每年自1月至7月北半球的大气质量逐渐减少,自7月至1月则逐渐增加,半年增减的总质量约为10.3×10~(18)克,但半年增加与半年减少期中增减的速度并不一致。 (2)5—6月与10—11月两半球之间的大气质量输送最为强烈。 (3)两半球之间的质量输送一般大于北半球海陆区之间的质量输送。 (4)两半球之间的质量输送主要决定于亚欧大陆区逐月间的大气质量变化。 (5)亚洲区与太平洋区月际大气质量变化异常时,对我国月平均温度距平分布及水旱区域分布有明显的影响。

 
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