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The special geometric restrictions like parallelism andperpendicularity implicated in vanishing elements are deeply studied. In single-view case,the theory is presented to interpret relationship between two planar lines by applying 3Dinvariants of vanishing points. In two-view case, the method on extraction vanishing pointof an arbitrary spatial line is described, and moreover, the theory is presented to interpretrelationship between two elements in 3D space, such as two lines, two planes, line andplane, and so on.

4详细论述了消失元素(消失点、消失直线、消失平面等)所体现的垂直、平行等特殊几何约束关系；对单视图，提出了一种利用消失点列的3D不变量解释平面直线关系的方法；对双视图，提出了利用自共轭三角形和对极几何约束，提取任意直线的消失点的算法，并在此基础了提出了一种利用消失元素的3D不变量解释直线间、直线与平面间、平面间等多种空间几何关系的方法。

to explore and summarize the application efficacy of dhs fixation in elderly intertrochanteric femoral bone.methods in shangqiu fifth people's hospital from january 2000 to june 2007 the application of dhs treatment to intertrochanteric fracture has 58 cases, among which male 19 cases, female 39 cases, age 60~98 year old, average age 71 year old, all carry out dhs for fracture fixation.results after six months to 3 years of follow-up, 58 cases of this group has 47 cases with normal walking, without coxa vara, postoperative excellent rate is 81.03%.conclusion grasp the operative indication, intraoperative master key, dhs is the better choices to the treatment of intertrochanteric fracture.

目的 探讨和总结dhs内固定在老年人股骨转子间骨折中的应用疗效。方法商丘市第五人民医院自2000年1月至2007年6月应用dhs治疗股骨转子间骨折58例，其中男性19例，女性39例，年龄60～98岁，平均年龄71岁，均行dhs对骨折固定。结果经半年至3年随访，本组58例患者有47例能正常行走，无髋内翻，术后优良率81.03%。结论把握手术适应证，术中掌握操作要领，dhs是治疗股骨转子间骨折的较好选择。

In this paper, the theory of variable block-size motion compensation in H.264 is given and the best mode statistical law of inter-frame video coding is analyzed at first. Then a novel fast mode decision algorithm based on prior detection is presented.

该文首先简要介绍了H.264帧间多模式编码原理，然后对帧间编码的最佳模式进行统计、分析，提出了一种基于先验预测的帧间编码模式选择快速算法。

In the same neuron, veratridine (1.5～5.0 μmol/L) caused slow wave oscillations of interspike intervals, while aconitine (10～200 μmol/L) caused tonic firing.

结果发现，在同一神经元，藜芦碱(1.5～5.0 μmol/L)可以引起放电峰峰间期的慢波振荡，即峰峰间期由大逐渐减小，然后又逐渐增大，形成重复的振荡波形，每个振荡持续约数十秒至数分钟；而乌头碱(10～200 μmol/L)则引起强直性放电，即峰峰间期逐渐减小，然后维持在一个稳定的水平。

This protection machine series product make use of to respond to quickly not the line presses the component , assurance the direct current system is positive, the anode, cathode and as and anodes and the potential difference of the as settle, allowing appear temporary in the direct current system conduct electricity press limit the weak electricity equipments inside the scope, thus insuring the equipments safety movement.

本保护器系列产品利用快速响应的非线性压敏元件，保证直流系统正、负极间，正极与地间及负极与地间的电位差恒定，将直流系统中出现的暂态过电压限制到弱电设备的允许范围内，从而确保设备安全运行。

The 54 accessions were classified into five major groups:Ⅰ,Ⅱ,Ⅲ,Ⅳ and Ⅴ by cluster analysis using UPGMA, which showed significant relationship with the origin regions of accessions. Genetic differentiation between and within eight eco-geographical groups of C.dactylon was estimated by Shannon's diversity index, which showed that 63.81% genetic variance existed within group, and 36.19 % genetic variance was among groups, indicating rather large genetic distances among those germplasm, and there was a correlation between genetic differentiation and eco-geographical habits among the groups.

聚类分析结果表明，52份材料可聚为5类；基于Shannon多样性指数估算了8个狗牙根生态地理类群内和类群间的遗传分化，类群内的遗传变异占总变异的63.81%，类群间的遗传变异占总变异的36.19%，表明这些抗源材料遗传差异较大，各生态地理类群间的遗传分化与其所处的生态地理环境具有一定的相关性。

Results showed that the magnitude on grey correlation degree between various agronomic characters and yield per plant was plant spread, plant height, fruit length, fruits per plant, weight per fruit, the first flower node, fruit width and branches per plant. The magnitude on grey correlation degree between various biochemical matter contents in flower buds and agronomic characters was soluble sugar, soluble protein, POD activity, ABA , IAA, free proline and ZRs. The order in leaves was soluble sugar, POD activity, free proline, ABA , IAA, ZRs and soluble protein.

结果表明，农艺性状与单株产量间关联度的大小顺序依次为株幅、株高、果长、结果数、单果质量、第一花节位、果宽和侧枝数，花蕾中生化物质含量与农艺性状间总体关联度的大小顺序依次为可溶性糖、可溶性蛋白质、过氧化物酶活性、脱落酸、生长素、游离脯氨酸和玉米素，叶片中生化物质含量与农艺性状间总体关联度的大小顺序依次为可溶性糖、过氧化物酶活性、游离脯氨酸、脱落酸、生长素、玉米素和可溶性蛋白质。

Among the four species of Bovidae, genetic differentiation in the HSL genes between yak and buffalo is equivalent to that between buffalo and cattle and between buffalo and zebu.

研究表明，牦牛、普通牛和瘤牛3个物种间的遗传距离大小相近，牦牛和水牛间的遗传距离与普通牛、瘤牛和水牛间的遗传距离大小相当。

Results: In 8 patients, the tumor was removed by abdominal median incision and 7 by abdominal right L-shape incision, 5 by left dorsolumbar flap incision, 3 by left abdominothoracic incision, 12 by intercostal incision 8 at 10th rib and 4 at 11th rib.

结果：行腹部正中切口8例，腹部右侧L形切口7例；左侧腹部胸膜外胸腹联合切口5例，左侧胸腹联合切口3例；肋间切口12例，其中第10肋间切口8例，11肋间切口4例。

The county villa equipments is good, serving wellfound,Current ang 3 luxurious villas,12 sets of spend a holiday the apartment ,2sets of businesses suite and well found standard in 45 facilities a the human life,Can accept 300 people at the same time the party halol of the meal with 11 a buildings,thereare multifunction hall and peaceful board room in comforts the luxurious type,and there are business marker ,coffee rooms,Health center,beauty salon,Pingpong,Beach volleyball ,fishing,toxophily,bowling,tennis court,and billards Is to spend a holiday the recreational good where abouts tennis court.

山庄设备优良，服务齐全。现有豪华别墅3栋，12套度假公寓，2套商务套房以及45间设施齐全的标准双人间；可同时容纳300人就餐的宴会厅和十一间风格各异的包房；有豪华气派的多功能咖啡吧、保健中、美容美发、乒乓球室、沙滩排球、钓鱼台、射箭、保龄球馆、网球场、斯洛克等娱乐设施，是度假休闲的好去处。

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。