置换

基本解释 (translations)

metathesis  ·  permute  ·  metatheses  ·  permuted  ·  permutes  ·  permuting  ·  transposing

与置换相关的网络例句 [注：此内容来源于网络，仅供参考]

052 Describes and claims a body of polycrystalline dielectric ceramic material having a lead zirconate--lead titanate--lead stannate composition falling within the area A B C E F of the triaxial diagram 1d of the drawings accompanying this specification and containing at least one substitutional additive ingredient selected from the group consisting of elements having respective ionic radii sufficiently close to the ionic radius of one of the elements lead, tin, titanium, zirconium and oxygen to permit of substitution, and a valence state differing from that of said one element by less than three units, the aggregate quantity of additive ingredient amounting to from 0.1 to 5 percent of the replaced ion on an atom basis, each additive ingredient present in said material being in ionic form and substituting for a finite percentage of the ions of a particular one of the elements lead, tin, titanium, zirconium and oxygen with respect to which it conforms with regard to ionic radius and valence state, said additive ingredient replacing a quantity of said elements having in the aggregate an equal number of valence units.

参考译文：第 1012052 号专利说明书介绍一种含有锆酸铅，钛酸铅，锡酸铅的多晶陶瓷介质材料，其组成在说明书附图 ld 三元相图中处于 A B C E F 区域内，该组成至少还含有一种置换添加物，这种添加物从一组离子半径分别接近于铅，锡，钛，锆，氧的元素中选出，以利于互相置换，而与上述一种元素化合价之差应小于三价。该添加物的总量为被置换离子的 0.1%~5%克原子。上述材料中的每种添加物是以离子形式存在的，它以一定的百分数置换铅，锡，钛，锆，氧中的某一元素的离子。添加物在离子半径和价数上必须类似于上述任一元素，并且置换添加物的量与被置换的元素在总体上具有相等的化合价数。本句由两个简单句构成，一个主句，另一个是定语从句。

Introduced are four displacing methods, namely complete mixing, non-mixing, vaccum deaeration, and pressure displacement.

介绍了常用的四种置换方法，即完全混合置换、无混合置换、真空置换和加压置换。4 vacuum。

We provide a substitution box, exponential permutation which has much measurable security, and give a enumerating result and a fast algorithm of calculating such permutation. An almost perfect nonlinear exponential permutation with high algebric degree is proposed. with some discussion on how to select the parameters of such permutation. The experimental result shows us a conjecture that there exists no such permutation over even dimensional space. As a way of generating substitution boxes, we briefly point out the cryptographic weakness of the exponential functions derived from such permutation. We also present two new cryptographic indexes, fixed point and cyclic structure, on which we investigate the performance of such permutation. Finally, we give a viewpoint about the application of correlation immune functions in designing substitution boxes.

提供了一种可度量安全强度的代换盒－幂置换；详细阐述了幂置换的实现和计数问题；给出了一种计算幂置换的快速算法；从几乎完善非线性幂置换角度讨论了幂置换参数的选取，并提出了一种高次几乎完善非线性置换；通过试验给出了关于偶数维空间上几乎完善非线性幂置换的一个猜想；简要给出了由幂置换派生出的幂函数的密码局限性；针对幂置换，提出了两个密码安全指标：不动点和循环结构；证明了幂置换在这两个指标下的密码性能；简要讨论了相关免疫函数与代换盒设计的关系。

Using the theories of probability, algebra, logical function in cryptology and spectral theory comprehensively, the dissertation investigates the properties and constructions of orthomorphic permutations, omni-direction permutations, quick trickle permutations and generalized orthomorphic permutations.

分组密码是现代密码学中一个重要的研究分支，而置换理论在分组密码中占有重要的地位，任何没有信息扩张的密码体制都可以看作是置换的结果，如数据加密标准DES可以看作是明文在密钥控制下的置换，公钥密码体制RSA可以看作是一种多项式置换，因此，研究置换的有关性质和构造具有重要的理论意义和应用价值。

The four round MISTY-type and the three round dual MISTY-type transformation are optimized by replacing the first round pseudorandom permutation with XOR-universal permutation and employing identical pseudorandom permutation in the second and the third round.

在保持其安全性不变的情况下，把4轮MISTY结构中第1轮的伪随机置换，用一个XOR-泛置换代替，第2，第3轮采用相同的伪随机置换，3轮结构中第1轮的伪随机置换用XOR-泛置换代替，其它轮相同。

Elderly patients with conservative treatment of femoral neck fracture in the bone unhealing rate, avascular necrosis rate and bed incidence of complications are very high, often need surgical treatment, Currently Artificial arthroplasty better able to load the early running, and significantly improved the quality of life. Orthopedist has been universally acknowledged, which was also hemiarthroplasty for and hip arthroplasty mainly, But these indications of operation and the pros and cons of surviving in numerous disputes, By comparing our double-action Hemiarthroplasty with total hip arthroplasty for femoral neck fracture in the elderly average operative time, The average blood transfusion, the average length of stay, average hospital charges, early complications, Harris score, Oxford hip score standards evaluation discussion bipola Femeral Head placement with total hip arthroplasty in the treatment of femoral neck fracture in the elderly: the advantages and disadvantages.

老年患者股骨颈骨折保守治疗的骨不愈合率、股骨头缺血坏死率及卧床并发症发生率很高，常需要行手术治疗，目前应用人工关节置换疗效较好，能早期负重行走，生活质量明显提高，已得到骨科医师的普遍认同，其中又以人工股骨头置换术和人工髋关节置换术为主，但这些术式的适应证及利弊尚存在诸多争议，我们通过比较双动人工股骨头置换与全髋关节置换治疗老年人股骨颈骨折的平均手术时间、平均输血量、平均住院时间、平均住院费用、早期并发症、Harris评分、牛津髋关节评分标准评价来探讨双动人工股骨头置换与全髋关节置换在老年人股骨颈骨折治疗中的优势与劣势。

The mean range of motion was improved from preoperative 84°(40°-95°) to postoperative 104°(80°-120°); the mean preoperative Knee Society Scores were increased from preoperative 39 scores (10-67 scores) to 87(10-100), and the function was improved from 38 scores (0-60 scores) to postoperative 76(20-100). Alignment was obtained in 31 knees, with well localized femoral and tibial prostheses. The tibial prosthesis of 1 case developed inadequate retroversion; of 2 cases remained 2°-3° inversion; non-progressive radiolucent zone was found between tibial prosthesis and bone interface of 1 case.

膝关节活动度从置换前平均84°(40°~95°)增加到置换后平均104°(80°~120°)，膝关节评分从置换前平均39分（10~67分），提高到随访时平均87分（10~100分），功能评分从置换前平均38分（0~60分）提高到随访时平均76分（20~100分）。31膝获得肢体的良好对线，股骨及胫骨假体位置良好。1例胫骨假体后倾不足，2例胫骨假体残留2°~3°内翻，1例胫骨假体与骨组织界面存在非进展性透亮带。

Alignment was obtained in 31 knees, with well localized femoral and tibial prostheses. The tibial prosthesis of 1 case developed inadequate retroversion; of 2 cases remained 2°-3° inversion; non-progressive radiolucent zone was found between tibial prosthesis and bone interface of 1 case.

膝关节活动度从置换前平均84°(40°~95°)增加到置换后平均104°(80°~120°)，膝关节评分从置换前平均39分(10~67分)，提高到随访时平均87分(10~100分)，功能评分从置换前平均38分(0~60分)提高到随访时平均76分(20~100分)。31膝获得肢体的良好对线，股骨及胫骨假体位置良好。1例胫骨假体后倾不足，2例胫骨假体残留2°~3°内翻，1例胫骨假体与骨组织界面存在非进展性透亮带。

In chapter two of this paper, we introduce the transitivity, which is an important definition in the 1-permutation group.

在第三章，我们介绍了格序置换群的凸同余，并研究了可迁格序置换群的凸同余与块所决定的可迁格序置换群的分类；讨论了可迁格序置换群的凸同余和块的性质以及它们之间的关系。

It is also shown that it is quite possible to extract gold by self-catalysis leaching of thiosulfate from copper-containing ore or concentrate without the addition of copper ions.

在铁粉置换、锌粉置换、活性炭吸附等几种方法中，铁粉置换法从硫代硫酸盐的浸出液中回收金最理想，金、银置换率大于99％，而铜置换率小于20％，置换的最佳pH范围为10～10.5。

与置换相关的网络解释 [注：此内容来源于网络，仅供参考]

permutation group：排列群;置换群

置换码 permutation code | 排列群;置换群 permutation group | 置换矩阵 permutation matrix

permutation matrix：置换矩阵

该文提出了一种基于置换矩阵(permutation matrix)的非规则低密度奇偶校验(LDPC)码构造方法. 首先,提出了基于改进eIRA(IeIRA)算法的全局矩阵;接着,通过对全局矩阵M进行矩阵置换,生成LDPC码的校验矩阵日;研究了校验矩阵H中短圈(short cycle)长度与置换矩阵循环移位系数的关系,

permutation matrix：置换矩阵,排列矩阵

permutation group 置换群 | permutation matrix 置换矩阵,排列矩阵 | permutation modulation 置换调制,变换调制

permutation matrix：置换矩阵,排 矩阵

permutation code 置换码 | permutation matrix 置换矩阵,排 矩阵 | permutation of a set 集合的置换

replaceable：可置换的

replace 置换 | replaceable 可置换的 | replacement n.替换,置换,更新

replacement series：置换次序

replacement reaction 置换反应 | replacement series 置换次序 | replacement substoichiometry 置换次化学计量法

replacement series：置换次序,置换序

replacement selection technique 替换选择技术 | replacement series 置换次序,置换序 | replacement sorting technique 置换分类技术

dc substitution method：直流置换法

直流置换量测 dc substitution measurement | 直流置换法 dc substitution method | 直流置换必v校正 dc substitution power calibration

substitutional atom：置换原子

substitution reaction 置换反应 | substitutional atom 置换原子 | substitutional element 置换元素

substitutional element：置换元素

substitutional atom 置换原子 | substitutional element 置换元素 | substitutional solid solution 置换固溶体