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The relationships between the eigenvalues of Jacobi iteration matrix and the block AOR iteration matrix make a very important role in our analysis. Then we prove some sufficient conditions for the semiconvergence of the block AOR method.

利用块AOR迭代矩阵和相应的块Jacobi迭代矩阵的特征值之间所存在的关系，我们证明了求解奇异p-循环线性方程组的块AOR迭代法半收敛的一些充分件。

Pain Relief After Arthroscopic Shoulder Surgery: A Comparison of Intraarticular Analgesia, Suprascapular Nerve Block, and Interscalene Brachial Plexus Block

肩关节腔镜术后三种镇痛方法之比较：关节腔内镇痛，肩胛上神经阻滞和肌间沟臂丛神经阻滞

there is no need to insertion a temporary pacemaker for patients with chronic bifascicular block but without symptoms and atrio-ventricular block. teap is a easily way to evaluation atrio-ventricular conduction ability quantizely.

术前无症状不伴有房室传导阻滞的慢性双支阻滞病人没必要常规安装临时起搏器，食道心房起搏对评价房室传导功能有量化效果且简单易行。

There is no need to insertion a temporary pacemaker for patients with chronic bifascicular block but without symptoms and atrio-ventricular block. TEAP is a easily way to evaluation atrio-ventricular conduction ability quantizely.

术前无症状不伴有房室传导阻滞的慢性双支阻滞病人不必常规安装临时起搏器，食道心房起搏对评价房室传导功能有量化效果且简单易行。

A series of tri-block copolymers of styrene/tetradecyl methyl acrylate/3-methacryloxyl-propyl thimethoxyl silane was synthesized by atom transfer radical polymerization. The structures of those copolymers were characterized by means of gel permeation chromatography, infrared spectrum, and nuclear magnetic resonance (1H-NMR). Effect of tri-block copolymers on the mechanical properties of glass fiber/polypropylene composites was also investigated.

采用原子转移自由基聚合法合成了一系列新的三嵌段共聚物大分子偶联剂聚苯乙烯－b-聚甲基丙烯酸十四酯－b-聚3-甲基丙烯酰氧基丙基三甲氧基硅烷，通过凝胶渗透色谱、红外光谱和核磁共振(1H-NMR)证实了其结构，并研究了其对玻璃纤维／聚丙烯复合材料力学性能的影响。

A series of copper halides in one, two, or three dimensions have been successfully synthesized such as rhomboid dimers of stoichiometry [Cu2X2L2]n, the tetranuclear species on cubane or stepped cubane tetramers of stoichiometry [Cu4X4L4]n and hexagonal[Cu6X6] grid chains.2 The main strategy in crystal engineering is a secondary building block approach.3 For a given building block, there are two routes to construct frameworks.

在一维、二维或三维的一系列卤化铜已经成功地得到了合成，比如化学计量法[Cu2X2L2]n的长菱形二聚物、化学计量法[Cu4X4L4]n和六边形[Cu6X6]网格链的在立方烷上的四核类或阶梯式立方烷四聚物。[2] 在晶体工程上的主要策略是一种次级构件途径。[3] 对于一给定的构件来说，有两条构件骨架的路线。

The event of collision between Lasha block and Qiangtang block in Cretaceous was too weak to cause the regional tectonic effect, but only produced a little relief topograph and Cretaceous red classic deposit in Central Asia.

拉萨陆块与羌塘陆块白垩纪的碰撞本身表现并不强烈，当然也难以产生区域性的构造影响，只是在准平原化基础上产生一些地形微起伏，出现白垩纪红色碎屑岩沉积。

The pseudo-static test which subjects to horizontal load on the A-type autoclaved aerated concrete block wall was adopted. Reinforced concrete beams were set up at the upper and lower ends of the test block, and the four-bar linkage device was provided to ensure that the top of the wall was only in translatory motion, not in rotation at the level force. Hydraulic synchronous loading device was adopted to simulate the vertical load which was produced by the wall of the housing interlayer.

对A类蒸压加气混凝土砌块墙体采用水平荷载作用下的伪静力试验，试件的上下两端设置了钢筋混凝土梁，通过四连杆装置保证墙体顶部在水平力作用下只有平动而无转动，并采用同步液压加载装置模拟房屋层间墙体作用的竖向荷载。

this paper analyses the basic principle of tpc,compares the error performance in the system which has been applied with tpc with the uncoded system,studies the influences which different block codes and iterative numbers to tpc decode performance.under the circumstances of different iteration numbers and block codes,experiment simulation is carried on.the simulation results indicate that introduction of tpc can get the code gain of 5~6 db.tpc decoding algorithm is simple,and doesn′t have the error floor,the complexity of its hardware implementation is smaller,it is a kind of practical channel coding method.

摘 要：在分析turbo 乘积码的基本编译码原理的基础上，比较了未编码与编码后系统的差错性能，研究了选取不同分量码、不同迭代次数对tpc译码性能的影响。在不同迭代次数与分量码情况下，进行了仿真实验。仿真实验表明，在相同的差错性能条件下，采用tpc码能带来5~6 db的编码增益。tpc译码算法简单，没有错误平层，硬件实现复杂度较小，是一种非常实用的信道编码方式。

When the new underreamer had been put on the special tester under simulated hole reaming,it is found that the cutting-block is retractable in working grooves and the lock-block is on the safe side.

将新型扩孔器放在专用试验台架上，模拟现场扩孔作业，在受力作用下进行地面试验，切削块在工作槽内伸缩自如，锁块安全可靠；切削块完全张开后的直径达到设计要求，泵压差约为2 MPa。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。