层理论的

The reasonable thinning is very significant in theory and practice to improve the nutation space of canopy and conditions of water and nutrition underground, to guarantee individual and colony development and to improve forest community biomass and productivity.

合理的抚育间伐对改善森林林冠层的营养空间以及地下水肥的供应条件，保证林木个体和群体生长，充分发挥森林群落的生物量和生产力具有重要的理论和实践意义。

This paper systemically introduces the history and current status of the study on the problem of orthotropism and displacement back analysis, recounts and concludes the analysis theory about anisotropic rock mass, brings forward some models of displacement back analysis of the rock such as layered orthotropic model, proportional coefficient model, layered homogeneous model and equivalent simplificated model, and establishes target unknown, target functions and arithmetic for these models respectively, through analyzing the character of layered orthotropic rock mass.

本文系统介绍了正交各向异性问题和位移反分析方法研究的历史与现状，叙述与归纳了各向异性岩体的分析理论，通过分析成层正交各向异性岩体的特点，对该类岩体的反分析方法提出了分层正交各向异性模型、比例系数模型、分层均质模型和等效简化模型，并对各类模型分别确定了目标未知数、目标函数与算法。

Based on the study of the characteristics of deposition and lithofacies paleogeography, and factors that controlled the forming and distribution of reservoir of the Leikoupo Formation in Eastern Sichuan and its neighbour areas, this dissertation thoroughly studied the characteristics of the Leikoupo Formation petroleum system by means of dissecting gas pools which are being explorated, and guided with the new theory and method of petroleum system.

本论文的主要目的是在研究川东及邻区雷口坡组的沉积、岩相--古地理特征、储层形成控制因素和分布规律的基础上，通过已知气藏成藏条件解剖，以成气系统的新理论和新方法为指导，全面分析雷口坡组的成油气系统特点，最终对其成气系统进行划分和评价，从而指出勘探新领域。

The relationship between physico-chemical properties of nano-CaCO〓 and surface treating technology was studied. The results showed the coating model of micron CaCO〓 was not suitable to nano-CaCO〓. The influence of dosage of treatment agent on nano-CaCO〓 dispersion degree in matrix was studied, the results indicated it only need to passivate some active zone on nano-CaCO〓 surface.

研究结果表明，微米粒子的表面包覆活化理论不适宜用来指导纳米粒子的表面处理，在对纳米碳酸钙进行表面处理时，不需要在纳米碳酸钙表面形成完整的包覆层，只需对纳米粒子表面的部分活性点进行钝化即可，即纳米碳酸钙表面有限钝化。

After treated the surface of NiNb2O6 photoelectrode by mechanical polishing +chemical etching + photoetching, the stable values of the differential capacitance of the spacecharge layer are measured,the relationship between flatband potential Vfb and pH value of the electrolyte is obtained,and the value of Vfb is compared with its theoretical calculating value.

对电极进行机械抛光加化学抛光加光抛光处理后，测得了NiNb2O6半导体光电极空间电荷层的微分电容的稳定值，得到了平带电势Vfb与电解液pH值间的关系，并与Vfb的理论计算值进行了比较。

The mode field of photonic crystal fiber structured with hexagon symmetry hole cladding was analyzed by coupled-mode, and the effective indexes of base mode of different wave length were got. The characteristics of this photonic crystal fiber grating were computed and simulated by coupled-mode method and transmission matrix method. Moreover, the differences were compared between conventional fiber grating and photonic crystal fiber grating on their reflection spectrum and delay.

利用多极法对包层空气孔为正六边形对称结构光子晶体光纤的模式场进行了分析，计算出不同波长下基模的有效折射率，结合使用模式耦合理论和传输矩阵法对基于光子晶体光纤的布拉格光栅特性进行了计算和仿真，对比了常规单模光纤所成光栅与相同光栅周期的光子晶体光纤布拉格光栅反射谱及时延特性之间的差异。

Taking use of the reflectometer which is installed on the 3B1 line in BSRF, two kinds of measurements of reflectivity versus wavelength and reflectivity versus incident angle are carried out.

利用安装在北京同步辐射装置3B1束线上的一台小型反射率计，对磁控溅射方法制备的软X多层膜进行了R～θ、R～λ两种反射率测量，得到实测反射率高达32％的满意结果，同时给出了理论计算对实验的拟合，二者符合的很好。

The time space regularity of overlying strata movement and damage induced by coal mining was studied using the dynamic mechanics model. The developing regularty of faults and bed separation as well as surface subsidence caused by mining was analyzed based on the geological and mining conditions of working face 5306 in Xinglongzhuang Coal Mine. The data explaination using the model is more reasonable than that using other models. So it can be used in practical mining activities.

采用采动岩体动态力学模型，对采动引起的覆岩移动破坏的时空规律进行了研究，结合兴隆庄矿5306工作面的地质、开采条件，对采动引起的断裂带发育发展规律，岩体内部离层发生发展规律、地表下沉规律等问题进行了分析，并对观测结果作出了较以前的各种理论模型更为符合实际的解释，该模型可在实际工作中得到很好地应用。

Based on predecessor\'s research results, formation condition of oil-gas reservoirs of S_(2+3) oil layer in westslope region was comprehensively and systematicaly studied, through using comprehensively seismics,logging, well logging, core, analysis assay data and paleontology data and adopting the latest theories andtechniques and methods of structural geology, sequence stratigraphy, sedimentography, petroleum geology,and oil-gas accumulation dynamics, etc. Main controlled factors, periods and models of oil-gasaccumulation and distribution were identified, favorable exploration areas were forecasted, throughdissecting typical oil-gas reservoirs and analyzing oil-gas accumulation mechanism and process.

本文在充分借鉴前人研究成果的基础上，综合利用地震、测井、录井、岩心及分析化验和测试资料，采用构造地质学、层序地层学、沉积学、石油地质学、成藏动力学等多学科的最新理论和方法，对西斜坡区萨二、三油层油气成藏条件进行了全面系统的研究，通过西斜坡区萨二、三油层典型油气藏解剖和油气运聚机理及过程分析，搞清了其油气成藏与分布的主控因素、期次和模式，进而预测有利勘探区带。

This paper reviewed the history of sequence stratigraphy and summarized its main theories, achievements, and problems at different developing stages.

介绍了层序地层的发展历史，总结了各阶段的主要理论思想和所取得的成就，以及发展状况和存在的不足。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。