不均匀分布

Leaf area index and canopy openness,of an urban forest stand in Maofengshan,Guangzhou,were estimated using hemispherical photography in parallel with quadrat plant census.

LAI在整个林分中的分布基本呈均匀状态，从西到东及从南到北各样带间不存在显著的差异；而从南到北各样带的林冠孔隙度存在极显著的差异P=0。

For the axicons with 20 mm radius, 10-2 cone angle, when using incident spherical wave whose radius of curvature varius from 1200 mm to 1400 mm, the focal length increases from 200 mm to 120 mm and the lateral intensity distribution increases only 15μm.

对于半径20 mm，锥角θ=1×10－2的圆锥透镜，采用曲率半径为1200~1400 mm的球面入射波，可扩展焦深200 mm到120 mm，光强的均匀性有明显改善，横向场能量分布形状改变量不超过15 μm，完全达到应用要求。

The TCC technology was successfully applied to two of 160kA prebake cells in Pingguo Aluminum Company. It was shown that no tear-off of TCC was indicated after starting up of the cells. The operation of coating cells was improved to keep good shape of cell chamber, reduce the formation of sludge on the cell bottom, and gain more uniform current distribution.

将TIB：阴极涂层技术在160kA大型预焙槽进行了应用，并考核了涂层槽的指标，结果显示，焙烧启动后，TIB：阴极涂层不脱落，涂层槽的工作状态良好，炉膛规整，炉底干净，电流分布均匀；与对比槽比较，阴极内衬对钠的吸收减少，钠渗透速率减缓，炉底压降降低(平均降低39mv)，电流效率提高(平均提高0.41%)；涂层的寿命为38个月。

The TCC was still good and in integrity after 12h of electrolysis. The TCC technology was successfully applied to two of 160kA prebake cells in Pingguo Aluminum Company. It was shown that no tear-off of TCC was indicated after starting up of the cells. The operation of coating cells was improved to keep good shape of cell chamber, reduce the formation of sludge on the cell bottom, and gain more uniform current distribution.

将TiB〓阴极涂层技术在160kA大型预焙槽进行了应用，并考核了涂层槽的指标，结果显示，焙烧启动后，TiB〓阴极涂层不脱落，涂层槽的工作状态良好，炉膛规整，炉底干净，电流分布均匀；与对比槽比较，阴极内衬对钠的吸收减少，钠渗透速率减缓，炉底压降降低（平均降低39mV），电流效率提高（平均提高0.41％）；涂层的寿命为38个月。

The properties of TCC with ATS were as good as the TCC with HTS, better that the requirement of standard GB8744-88 for semi-graphitic carbon block. As good as TCC with HTS in industrial cells, the TCC with ATS also reduces the sodium penetration to cathodic lining, no tear-off of the coating was found after starting up of the cells. As compared with reference cells, the operation of coating cells with ATS was also improved to keep good shape of cell chamber, reduce the formation of sludge on the cell bottom, and gain more uniform current distribution. The ohmic drop of TCC cell bottom was lessened by 11. 5mV. The current efficiency was increased by about 1. 48% in average. It was estimated that the TCC life could be 44 months. Obviously, the TCC with ATS could also improve the performance of industrial cells, save energy, and increase the cell life.

对常温固化涂层槽的考核表明，与高温固化涂层槽一样，阴极内衬对钠的吸收减少，钠渗透速度减缓，从而减小钠膨胀危害，减少了铝电解槽早期破损的几率；启动后，常温固化涂层不脱落，同样具有良好的粘接性能；与对比槽相比较，常温固化涂层槽正常生产后，阴极表面干净、光洁，无沉淀或结壳，炉膛规整，阴极、阳极电流分布均匀，炉底压降降低（平均降低11.5mV），电流效率提高（平均提高1.48％）；涂层在电解槽内存在的时间可达到44个月以上；常温固化涂层同样可以起到改善电解槽工作状态、节能降耗、延长槽寿命的作用。

The properties of TCC with ATS were as good as the TCC with HTS, better that the requirement of standard GB8744-88 for semi-graphitic carbon block.AbstractAs good as TCC with HTS in industrial cells, the TCC with ATS also reduces the sodium penetration to cathodic lining, no tear-off of the coating was found after starting up of the cells.As compared with reference cells, the operation of coating cells with ATS was also improved to keep good shape of cell chamber, reduce the formation of sludge on the cell bottom, and gain more uniform current distribution. The ohmic drop of TCC cell bottom was lessened by ll.SmV. The current efficiency was increased by about 1 .48% in average. It was estimated that the TCC life could be 44 months.Obvi

对常温固化涂层槽的考核表明，与高温固化涂层槽一样，阴极内衬对钠的吸收减少，钠渗透速度减缓，从而减小钠膨胀危害，减少了博士学位论文摘要铝电解槽早期破损的几率；启动后，常温固化涂层不脱落，同样具有良好的粘接性能；与对比槽相比较，常温固化涂层槽正常生产后，阴极表面干净、光洁，无沉淀或结壳，炉膛规整，阴极、阳极电流分布均匀，炉底压降降低(平均降低11.smv)，电流效率提高(平均提高1.48%)；涂层在电解槽内存在的时间可达到44个月以上；常温固化涂层同样可以起到改善电解槽工作状态、节能降耗、延长槽寿命的作用。

At the same time, it also leads to more uniform distribution of protective potential.

与传统的技术相比较，它的主要特点是：保护电流不会向外泄漏，与周围的金属构筑物之间不必安装绝缘法兰，并能改善罐底电位分布的均匀性。

Second, unlike the traditional line gate device having higher electric field around the sharp tips of gate finger, the closed gate one has more uniform distribution of electric field.

二：封闭式结构不像传统线形结构在闸极末端处有尖端大电场的存在，於是有更加均匀的电场分布。

Species richness and Pielou evenness index were used to measure species diversity. Species richness in polluted area was 32-67, while in control area it was 47-82. Pielou evenness index of tree layer was 0.1161-0.8509, while those of shrub layer and herb layer were 0.1763-0.3249 and 0.0443-0.2601, respectively. The results showed that both species richness and Pielou evenness index were influenced by the point source pollution. Species importance values showed significant differences between polluted area and control area. Dominance of different species had changed, and some species even disappeared under the pressure of pollution, indicating a process of species replacement in plant communities. Such species replacement can provide a scientific basis for species selection for restoration of human-damaged ecosystem. The natural regeneration of Quercus variabilis was insensitive to pollution, while Cupressus funebris was effected seriously.

仅在污染区中出现的物种数量远低于仅在对照区中出现的物种数量；(2)可分出4种基本的群落类型：马尾松林、柏木林、栓皮栎林和马尾松＋栓皮栎林，各群落特定层次的物种丰富度指数以及Pielou均匀度指数在污染区与对照区之间存在显著差异；(3)污染胁迫下，物种在群落中的生态优势度发生了变化，反映了群落中不同物种相互替代的过程，这种物种的替代可为今后受损生态系统人为恢复过程中物种的筛选提供一定的理论参考；(4)对群落中王要物种更新的调查发现：栓皮栎林对污染不敏感；柏木林污染区与对照区幼苗数量及分布格局均有明显差异，污染条件下群落未来演替受到严重干扰。

The produced composite material has high strength, high ductibility and relatively great thickness, and may be used as functional structure material.

本发明工艺成本较低，操作温度不高，制备的铜基复合材料增强颗粒分布均匀，强度高，延性好，整体厚度相对普通电镀镀层较大，可单独被用作功能结构材料。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。