置换的

In terms of Latin squares, an isotopy is given by a permutation of rows α, a permutation of columns β, and a permutation on the underlying element set γ.

在拉丁方中，三元组由第α和第β列的一个置换以及其余集合上的一个置换γ给出。

The purpose of this study is to establish the database of bony landmarks in Chinese adults for TKA, including some angles related to the femoral rotational axis in primary TKA and some distances related to the joint line in revision TKA.

因此本研究目的为建立可信赖的国人膝关节参考点资料库，希望可辅助医师在首次置换手术选择股骨元件旋转轴以及在再置换手术重建病人原本的关节面有所帮助。

The set of all autotopies of a quasigroup form a group with the

在拉丁方中，三元组由第α和第β列的一个置换以及其余集合上的一个置换γ给出。

In addition, the longest common subsequence method can well define the distances between different permutations.

另外，采用最长公共子序法度量置换距离可以比较准确的反映不同置换之间的差异性。

Objective To compare the variability of adverse effects between BD closed tightly type detaining venepuncture and ordinary scalp venepuncture,and investigate the clinical effects applying BD closed tightly type detaining venepuncture in plasmapheresis.

目的 比较血浆置换术中采用BD密闭式静脉留置针技术与常规静脉穿刺出现不良反应的差异性，探讨BD密闭式静脉留置针技术在血浆置换术中应用的临床效果。

It is an important consideration in purification circuits that removal cadmium completely prior to cobalt cementation, because cadmium can inhibit basic zinc sulphate to adsorb on the surface of zinc dust.

镉可以起到阻止碱式硫酸锌或氢氧化锌吸附在锌粉表面的作用。欲加速钴的置换和提高置换效率，必须形成锌-钴合金或锌-镉合金。

A thermodynamic analysis of cementation of Ag with Cu in ammoniacal solution has been carried out. The calculated results indicated that this cementation reaction is possible thermodynamically.

进行了氨性溶液中Cu置换Ag的热力学分析，计算结果表明，该置换反应在热力学上是可能的。

Methylpyridine-coordinated ruthenium benzylidene complex 62 shows thehighest catalytic activity. TOF=960 h~(-1) is achieved during RCM reaction of 50, TOF=4 h~(-1)is obtained during the CM reaction of acrylonitrile with 1-decene.

其中，2-甲基吡啶配位的钌卡宾配合物62的催化活性最高，在催化烯烃50闭环交互置换反应时TOF可达960 h~(-1)；催化丙烯腈与1-癸烯交叉交互置换反应时TOF达到4 h~(-1)。

Results BLASTn analysis revealed insertion or substitution of 18-38 nucleotides in the penA gene of gonococcal isolates with reduced ceftriaxone susceptibility.

将11株头孢曲松低敏和2株头孢曲松敏感的淋球菌penA基因全基因测序，通过BLASTn与BLASTx分析，研究penA基因的碱基插入和置换情况及PBP2中氨基酸插入和置换模式。

It shows that mechanical activation makes the activity of iron increase sharply and enhanced its replacement reaction ability. Succeedingly, the recovery of copper and nickel is improved.

在铁粉置换法中，利用机械活化可以增强铁粉的活性，从而增大从溶液中置换铜镍的效果。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐