置换的

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。

It is proved that two matrix tensor operation can be exchange at permuted similar and this kind permutation matrix is portrayed.

分析了分块矩阵张量积的相关数学特性，证明了在置换相抵意义下两个矩阵的张量积运算可以交换，特别刻画了这类置换矩阵，并由此证明了在置换相抵条件下分块矩阵可以分块地进行张量积运算。

Infections of 3 cases were controled after treatment with the wound dressing and compression bandaging after local inflammation organic resection, oral Xinhuang Tablets of proprietary Chinese medicines and antibiotics; 9 cases were treated with arthroscopic joint clean-up washing , 2 case of them were treated with incision debridement combined by synovectomy arthroscopic due to inability to complete debridement ; 3 case of them were treated with temporary prosthesis replacement surgery on the infection after total knee debridement due to recurring knee swelling and rupture , filling bone cement containing sensitive antibiotics, convection to wash on the articular cavity, and second phase renovation in stable condition, finally they recoveried postoperatively and discharged.

结果：对22例出现炎症性反应的TKA术后患者，经抗感染、关节腔对流冲洗、清创和Ⅱ期再置换并配合口服中成药新癀片等处理。10例轻微肿痛病人经单纯药物治疗，症状改善。12例患者应用外科干预， 3例行局部炎症组织切除后伤口换药并加压包扎，口服中成药新癀片及抗生素治疗后控制感染；9例在关节镜下行关节清理冲洗，其中2例在行关节镜下手术时因无法彻底清创行切开清创合并滑膜切除； 3例因反复出现膝关节红肿、疼痛、甚至破溃予全膝置换术后感染清创临时假体置换术，用含敏感抗生素骨水泥填充，对关节腔进行对流冲洗，待关节情况稳定后行Ⅱ期翻修，术后痊愈出院。

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。

The effect of replacing the water in West lake is mostly rested on the area which can be replaced and the influx, whenas the size of the area is mostly related with field structure.

西湖水体的置换效果主要取决于可被置换区域的面积和引水量，而可被置换区域大小主要取决于流场结构。

Results from the present study show that compared with collum femoris preserving and stemless hip prosthesis, resurfacing arthroplasty may be the more effective treatment for avascular necrosis of femoral head with less complications and lower rate of revision.

提示与保留股骨颈全髋置换及无柄关节置换相比，表面置换对于恢复患者髋关节功能有着明显的优势，并发症少，翻修率低，对于年轻患者是一个较好的选择。

Objective: To explore the value of different surgicalmethods in the treatment of the displaced femoral neck fracture of the elderly.analyse joint function, complications, reversion factors Methods: An follow up study was done on 71 cases older than 60years who were treated with internal fixation, femoral head arthrop lasty and total hip joint replacement between 2000 and 2005 to compare the difference upon operation time, blood loss, duration of hospi-talization , joint function evaluation one and two years after operation , complications and reversionrate.

目的：探讨加压空心螺钉内固定术、人工股骨头置换术和人工全髋关节置换术在治疗老年人移位性股骨颈骨折中的临床价值。分析术后髋关节功能、并发症、二次手术或翻修率等相关因素。方法：对2000—2005年于长春中医药大学第一附属医院骨科收治的71例60岁以上移位性股骨颈骨折患者进行了随访研究，比较AO加压空心螺钉内固定术、人工股骨头置换术和人工全髋关节置换术在手术时间、出血量、住院时间、术后下地时间、术后12个月和24个月的髋关节功能评价、并发症以及二次手术率方面的差异。

. This is the first study to compare employment status following Patellofemoral, Unicompartmental knee and Total Knee Replacement.

这是第一个进行髌骨关节置换、单髁关节置换及全膝关节置换后就业情况的研究。

The mean Harris score was 47.3 preoperatively and 83.2 postoperatively. The excellent and good rate was 90.1%. The position of prosthesis was appropriate, no loosening or sinking was found at the final follow-up evaluation. Radiotransparent region was found in one region of one case three months after surgery but with no sclerosis, rest pain or activity pain, fever, or local swelling.

Harris评分由置换前的平均47.3分上升到置换后的83.2分，优良率90.1%，最近一次随访X射线片评价假体在位良好，无松动、下沉现象，关节功能恢复情况满意。1例翻修患者于髋关节置换后3个月复查时发现1区有局限性透光带，无明显硬化带，患者无静息痛或活动疼痛，无全身发热、局部红肿表现，为骨长入性稳定。

Spinel is a compound of magnesia and alumina(Al2O3) and is thus a magnesium aluminate(MgAl2O4), found as accessories in igneous rocks, in metamorphosed aluminous schists, in contact metamorphosed limestones and sometimes in high temperature iore veins.

尖晶石主要成分是氧化镁和氧化铝，结晶习性是等轴晶系漂亮的正八面体。镁被铁置换就是铁尖晶石，被锌置换就是锌尖晶石，铁完全置换镁形成磁铁矿，铬置换铁尖晶石形成铬铁矿，这些类质同相的等轴晶系都是八面体结晶的尖晶石族矿物。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。