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  replacement
     Study on Disruption and Replacement of dnmV Gene in Daunorubicin Biosynthesis
     柔红霉素产生菌dnmV基因阻断突变和功能替换研究
短句来源
     A METHOD FOR INCREASING CONTROLLER RELIABILITY IN MARINE COMMAND SYSTEM-BY PROBABILITY ANALYSIS AND SPARE REPLACEMENT METHODS
     提高船舶指控系统控制机可靠性的方法——概率分析与备用替换
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     ON OPTIMAL STOPPING PROBLEMS OF GENERALIZED RENEWAL-TYPE REPLACEMENT
     广义更新型替换的最优停止问题
短句来源
     Several Models of Opportunitic Replacement Policies
     机会替换的若干模型
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     RELATIVE BRADYCARDIA AFTER MITRAL VALVE REPLACEMENT
     二尖瓣替换术后相对性心动过缓
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  substitution
     The substitution of Ti~(4+) for Li~(1+) and Ta~(5+) stabilized the perovskite phase, destabilized 1∶2 ordering, and improved the grain growth of Ca[(Li_(1/3)Ta_(2/3))_(1-x)Ti_x]O_(3-δ)(x=0.20, (0.30)) ceramics.
     用Ti4+部分替换Li1+和Ta5+稳定了钙钛矿相,破坏了1∶2有序化结构,促进了Ca[(Li1/3Ta2/3)1-xTix]O3-δ(x=0.20,0.30)陶瓷的晶粒生长.
短句来源
     The phosphorus goes into zircon's structure mainly by way of (Y,HREE,Fe) 3+ P 5+ (Zr,Hf) 4+ -1 Si 4+ -1 , Al 3+ P 5+ Si 4+ -2 or P 3+ Al 5+ Si 4+ -1 Zr 4+ -1 substitution.
     磷主要以 (Y ,HREE ,Fe) 3 + P5+ (Zr,Hf) 4+ -1Si4 + -1、Al3 + P5+ Si4 + -2 、P5+ Al3 + Si4 + -1Zr4 + -1等替换方式进入锆石晶格中。
短句来源
     MOLECULAR DYNAMICS RESEARCH ON R175 RESIDUE SUBSTITUTION IN P53 PROTEIN
     P53蛋白质R175残基替换的分子动力学研究
短句来源
     By the substitution of Si for 1%Ti, the glass transition temperature T_g, crystallization temperature T_ x1 and temperature interval of super cooled liquid region ΔT_x and reduced glass transition temperature T_ rg of the alloy are proved to be changed from 672K, 735K, 63K and 0.575 to 692K, 753K, 61K and 0.592, respectively.
     结果表明用1%Si替换Ti后,合金的玻璃转变温度、晶化温度、过冷液相区、约化玻璃温度分别从672K,735K,63K和0.575转变为692K,753K,61K和0.592。
短句来源
     (2) substitution of low Ca 2+-high Mg 2+ artificial cerebrospinal fluid (aCSF) for normal aCSF abolished the 5-HT-induced inhibitory effect but failed to affect the 5-HT-induced excitatory effect;
     (2 )用低Ca2 + 高Mg2 + 人工脑脊液替换正常人工脑脊液后 ,5 HT引起的兴奋效应仍可出现 ,但 5 HT引起的抑制效应不再出现 ;
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  replace
     The exchange bias field is enhanced from 180 x (103/4ir)A/m to about 600 × (103/4π)A/m using SAF structure (CoFe/Cu/CoFe) to replace the CoFe pinned layer.
     利用CoFe/Cu/CoFe SAF结构替换掉与IrMn相邻的CoFe被钉扎层,使交换偏置场从原来没有SAF的180×(10~3/4π)A/m上升到600×(10~3/4π)A/m左右,且交换偏置场随着SAF结构中两层CoFe的厚度差减小而增大。
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     The injured groups as control:to replace Shenmai injection by NS in each group as described above,and marked the new groups as A',B',C',D',E' and F'.
     用生理盐水替换参麦为油酸损伤对照组,分别为A′、B′、C′、D′、E′、F′组。
短句来源
     After purified the promoter was used to replace the CMVIE promoter in the pEGFP-N1 plasmid and gained pSV40-EGFP plasmid.
     二、研究方法首先采用PCR方法从质粒pGL2-control中扩增获得SV40弱启动子,并以其替换质粒pEGFP-N1中的强启动子CMVIE,获得pSV40-EGFP质粒。
短句来源
     Microcosmic detect source code will be compiled to a dynamic shared library which would replace glibc memory management functions, but allocation and free operation is executed in glibc's memory management function all the same.
     微观检测捕捉到进程进行内存分配与释放的行为,通过编译生成一个新的动态库来替换glibc中的用户空间内存管理函数,这个过程仅仅是替换,真正的内存分配与释放仍然需要调用glibc中的动态内存管理函数。
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     This paper proposes wave field replacement technology which uses new wave field formed by zero phase wavelet to replace old aberrant wave field and keep old one's dynamical and spacial characteristic at the same time.
     本文采用波场替换技术 ,在每次延拓时用零相位子波形成一个同时保留了原波场的动力学特征与空间位置信息的新波场 ,然后用新波场取代原畸变波场并参与正演记录合成。
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  replacing
     S replacing HDM.
     S替换HDM。
短句来源
     It presents WDM system expansion solution, that is adding 10 Gbit/s wave path or replacing 2.5 Gbit/s with 10 Gbit/s in 8/16x2.5 Gbit/s WDM system, including WDM terminal equipment transformation solution, applied techniques and testing items.
     对在原有8/16×2.5 Gbit/s波分复用系统中增加或替换少量10 Git/s波道的扩容技术作了介绍,如波分复用终端设备改造方案,扩容工程所应用的技术及测试项目等。
短句来源
     By cloning the fusion gene to medium vector p~(UC-121), and replacing CaMV35S promoter by LEA protein D-113 gene promoter from cotton, the plant expression vector p~(BI-LEA-O:G121) was constructed.
     将该融合基因克隆到中间载体pUC-121上,并用棉花LEA蛋白D-113基因启动子替换CaMV35S启动子,构建成植物表达载体pBI-LEA-O::G121。
短句来源
     Objective To improve the protective efficacy of H5 subtype avian influenza DNA vaccine througy replacing the codons of the HA gene of A/Goose/GuangDong/1/96(H5N1)[GD/1/96(H5N1)] with the codons bisa and througy replacing the optimized HA gene optiHA5. Methods The codon optimized H5 avian influenza HA gene optiHA5 was constructed by synthesized oligos and over-lapping extension PCR techniques.
     目的用鸡偏嗜性密码子替换H5亚型禽流感病毒A/Goose/GuangDong/1/96(H5N1)[GD/1/96(H5N1)]的保护性免疫原HA基因的密码子,优化和构建了基因optiHA5,以提高H5亚型禽流感DNA疫苗的表达水平和免疫保护效果。
短句来源
     The EGA (Enhanced Graphics Adapter) is a new graphics card developed by IBM for replacing the older CGA (Color Graphics Adapter) products.
     EGA(Enhanced Graphics Adapter)是IBM公司近年来推出的图形卡,期望替换较老的CGA(Color Graphics Adapter)产品。
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  replacement
Biososteric Replacement in the Design and Synthesis of Ligands for Nicotinic Acetylcholine Receptors
      
The effect of the replacement of a trimethylammonium group with a dimethysulfonium in the two rings was also evaluated.
      
The effect of the replacement of a trimethylammonium group with a dimethylsulfonium in the two rings was also evalutated.
      
Optimal replacement for discrete additive damage models: Algorithm
      
In previous work, under some assumptions, we specified a replacement rule which minimizes the long-run (expected) average cost per unit time and possesses control limit property.
      
更多          
  substitution
In this paper, survey of the key contents on this subject, focusing on the most well-known models based on kernel substitution, namely SVM, as well as the activated fields at present and the development tendency, is presented.
      
It shows that the faster technological substitution or innovation encourages the leader to invest earlier while induces the follower to invest later.
      
The alkyl substitution improves the thermal spectral stability of the polymers due to the steric hindrance of the alkyl side chains, thus leading to efficient separation of the main chain backbones.
      
Influence of the rare earth element substitution on oxygen adsorption-desorption properties of YBCO
      
This mutation caused a substitution of codon 339 from CTA (leucine) to CCA (praline).
      
更多          
  replace
We consider 3-parametric polynomialsPμ*(x; q, t, s) which replace theAn-series interpolation Macdonald polynomialsPμ*(x; q, t) for theBCn-type root system.
      
It is possible to replace K? by some conjugate xK?x-1 so that the correspondence is preserved.
      
Further we investigate under which conditions one can replace the discrete model of the finite section method by the periodic discrete model, which is used in many numerical procedures.
      
In order to deal with large problems, a pair of trust region subproblems in horizontal and vertical subspaces is used to replace the general full trust region subproblem.
      
A tapped-inductor is used to replace the normal output filter inductor, so that the circulating current in the zero-state can be reset to zero.
      
更多          
  replacing
Benzoxycarbonyl chloride was selected as amino group protection agent, and the yield was elevated by replacing sodium bicarbonate with triethyl amide as the acid's neutralizer.
      
Development of pharmaceutical industry is currently aimed at introducing biotechnological processes on a large-scale and thereby replacing multiple-stage chemical syntheses.
      
Transportation problems are investigated by replacing the classical transportation cost minimization functionals by minimax functionals.
      
If the seismic region is linear, then the accuracy of prediction can be improved by dividing the region into transform zones and replacing the distribution densities and their estimates by comparison of matrices.
      
This conclusion is in agreement with a suggestion (put forward in our earlier publications) that K15-type inhibitors are bound to PS-2 reaction center, replacing QA in its binding site.
      
更多          
  其他


A β superlattice structure, with the ideal stoichiometrical formula AgAuZn2 and isoinorphous with that of Heusler alloys, has been found existing over a quite wide range of composition. It is, in fact, a superstructure of the β ordered structure. Its formation is accompanied by a sudden lattice contraction. The effect of gradual substitution of Ag by An on the atomic distribution has been stndied systematically. It is shown that the Au atoms introduced simply replace the Ag atoms more or less in a random manner,...

A β superlattice structure, with the ideal stoichiometrical formula AgAuZn2 and isoinorphous with that of Heusler alloys, has been found existing over a quite wide range of composition. It is, in fact, a superstructure of the β ordered structure. Its formation is accompanied by a sudden lattice contraction. The effect of gradual substitution of Ag by An on the atomic distribution has been stndied systematically. It is shown that the Au atoms introduced simply replace the Ag atoms more or less in a random manner, the positions of Zn atoms not being affected. Tho decrease of the degree of order as deviating from the stoichiometrical formula is not merely due to the deviation from the ideal chemical composition; some disordering among the Ag and Au atoms also occurs. High temperature investigation of Ag-rieh alloys shows that the temperature of β'-β transformation increases with Au content and that the β-phase structure exists only at high temperatures. The presence of even a minute amount of Au stablizes the β' structure obtained by quenching very remarkably. On the other hand, the β' structure of Au-rich alloys persists from room temperature probably to the melting point.

合金AgAuZn_2具有一个与郝斯勒合金同晶型结构的β″相,这个β″相存在于一个相当广阔的成分范围里。事实上,β″相就是β′有序结构的超结构。伴随着,β″结构的形成晶格发生突然的收缩。关于Ag-Au替换对于原子分布的影响,也作了系统的观察。在Ag-Au替换过程中,Au和Ag的替换或多或少是无规律性的,但Zn原子则仍保持它们的适宜位置,而不受到影响。当成分偏离于理想化学式AgAuZn_2时,有序度的减小不仅仅是由于化学成分的乖异,而且Ag-An替换也产生了一些无序的排列。高温观察的结果指出:Ag多合金的β′-β转变温度随着Au含量的增加而升高,而β相只能在高温度存在。少量的Au大大地提高了由淬炼而得到的β′相的稳定度。但是Au多的合金无论是在室温和高温都是具有β′结构的。

A general theory for snap-through buckling of an open bimetallic shallow spherical shell under uniform temperature field is presented in this paper. It relates the critical buckling temperature both to physical and geometrical parameters of the shell, including the extent of its central opening as another important factor. Furthermore, they are expressed accordingly by various practical curves. While reducing to the special case of a closed shallow spherical shell, present theory appears to be in good agreement...

A general theory for snap-through buckling of an open bimetallic shallow spherical shell under uniform temperature field is presented in this paper. It relates the critical buckling temperature both to physical and geometrical parameters of the shell, including the extent of its central opening as another important factor. Furthermore, they are expressed accordingly by various practical curves. While reducing to the special case of a closed shallow spherical shell, present theory appears to be in good agreement with earlier work by Wittrick.According to the selection of reference surface of coordinates as suggested by and Radkowski, the basic equations for a double-layered shell are first simplified in forms similar to those of classical shell theory. By analogy, the thermal effect is replaced by an equivalent edge-moment loaded uniformly along both boundaries of the shallow spherical shell. The problem is then solved according to Hu's simplified method, but with some vital modifications. From the results of numerical computations, the paper gives some rather interesting conclusions, which may be valuable in designing the elastic elements of various instruments in engineering.

本文提出了有关开顶双层金属球面扁壳在均匀温度场作用下的稳定性的一般理论,它给出临界跳跃温度与壳体的物理、几何诸参数之间的相互关系,包括其开顶牛径大小也作为一个重要因素.文中并将它们绘成相应的实用曲线.在封顶球面扁壳的简化特例情况下,新理论似与早期wittrick的计算结果趋近一致. 根据与Radkowski建议的坐标参考面的选择方法,我们将双层壳体的基本方程首先简化成与经典壳体理论相似的形式.再通过比拟,以作用于球面扁壳内外边界上的均匀分布的相当边界力矩来替换温度效应.然后采用文献[6]的简化方法作了必要的改进来求解方程.从数值计算的结果,文中给出了一些有趣的结论,它们对于工程上各种仪表弹性元件的设计具有一定的参考价值.

On the basis of"The Empirical Electron Theory of Solids and Molecules" recently published by the writer,analyses of the valence electron structures of the α,β, and γ-Al_(12)Mg_(17) phases in the equilibrium diagram of Al-Mg binary system are made. The result seems satisfactory. The agreement between the theoretical and experimental bond lengths are,in general, with △D/D% smaller than 0.06%, only few are within 0.10—0.11%. The following conclusions are drawn:(1) A molecular formula for an intermetallic compound...

On the basis of"The Empirical Electron Theory of Solids and Molecules" recently published by the writer,analyses of the valence electron structures of the α,β, and γ-Al_(12)Mg_(17) phases in the equilibrium diagram of Al-Mg binary system are made. The result seems satisfactory. The agreement between the theoretical and experimental bond lengths are,in general, with △D/D% smaller than 0.06%, only few are within 0.10—0.11%. The following conclusions are drawn:(1) A molecular formula for an intermetallic compound so complicated like γ-Al_(12)Mg_(17) has its chemical valence structure interpreted satisfactorily for the first time. This shows the usefulness of the model of the fine structures of valence electron structure, n_(Tσ)=n_(Cσ)+n_(Lσ).(2) In the second order of approximation, △a/areveals very clearly the deviations from Vegard's law in the a and δ phases. This is due to the slight difference in the atomic size of Al and Mg, which induces microscopic holes and slots between atoms due to the random replacement between solute and solvent atoms, giving rise to small expansion in the lattice constants a and c.(3) The low melting points and the slow dropping of the solidus curve of the γ phase are qualitatively interpreted with satisfaction on the covalent bond structure and the limited random replacement of Al and Mg atoms with each other.(4) General verification of the three fundamental postulates and the method of bond length difference are made throughout the three regions of the solid solution phases.(5) Basic parameters for the analyses of other compounds and solidsolutions of Al and Mg are provided.Conclusions(1), (2)and(3)point out the possibility of the interpretation of intermetallic compounds and solid solutions in terms of valence electron theory and the phase diagram of metals and alloys begining to be understood in an electron bond theory.

本文根据作者最近发表的“固体与分子经验电子理论”中的基本理论部分,对Al-Mg二元系金相图的α,δ和γ相三个相区的结构进行了价电子结构的分析,主要是键结构的分析,得到了满意的结果,实验和理论键距误差一般在O.06%以下,只有少数几个在0.10—O.11%。 结果具有以下特点: (1)对于象γ-Al_(12)Mg_(17)这样复杂的金属间化合物分子式的化学价结构提供了满意的解释; (2)对二级近似的⊿a/a口提供了对Vegard定律的偏离,看出了固溶体由于两种大小略有不同的原子的零乱替换所产生的孔隙而引起的品格常数a,c的膨胀; (3)定性地说明了γ-Al_(12+y)Mg_(17-y)结构的低熔点和平缓下降的固相线形状; (4)全面验证了基本理论的三个假定和一个分析方法; (5)为Al,Mg的其它化合物价电子结构分析提供了基础资料。

 
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