进而

The off-axis reflection system composed of four aspheric mirrors was designed, but the system structure was not so simple and the performance can also be improved, besides, manufacture and test for large aspheric mirrors are difficult; and then the spherical Fresnel mirror which is easier to be manufactured and tested was used to replace the aspheric mirror, the spherical Fresnel mirror has low cost of replication, but this design also can\'t be used in projection lens because it was only feasible in narrow wavebands; Furthermore, the design making use of catadioptric projection lens was accomplished, this design is greatly applied in rear projector because it has merits of both refraction and reflection. But it had difficulties in color aberration correction and had complex structure.

设计了四片非球面组成的离轴式反射系统，然而，仅采用非球面设计系统结构不够精简，性能也有待进一步提高，且非球面面形较大时加工和检测都存在一定的困难；继而提出了用球面Fresnel反射镜代替非球面的设计方法，虽然Fresnel反射镜加工和检测更为简单，且复制成本低，但对波长具有选择性；进而，应用折反系统结合的方式设计了离轴式投影镜头，该方法因兼具折射和反射的优点，在大屏幕超薄背投系统的设计中广为应用，缺点是会产生难以校正的色差，且结构复杂。

Furthermore, it does not suggest any hierarchy of protocol stacks to be used between domains.

进而，它也没有建议任何用于领域之间的协议栈的层次。

The power from sea can make geo-environment change, for example they can be storm surge

进而，通过对影响研究区现代地质环境变化的主要因子？

Furthermore, this paper also elicits some disciplinary conclusions by studying an actual engineering examination. So it can offer some reference and evidence to the design of the soil-nail retaining system from the traditional safety coefficient method to the more economic and scientific subentry safety coefficient method.

进而，通过对一具体工程实例的分析研究得出了一些规律性的结论，为土钉支护的设计由传统的安全系数法向更为经济、科学的分项安全系数法转变提供了参考和依据。

A necessary and sufficient condition for the existence of guaranteed cost control is derived. Furthermore, it is shown that this condition is equivalent to the solvability of a system of linear matrix inequalities, and its solution provides a parameterized representation of guaranteed cost controllers. Based on that, the design of the optimal guaranteed cost controller is formulated as a convex optimization problem, which can be solved by the existing convex optimization techniques.

通过采用线性矩阵不等式的方法，导出了存在保性能控制律的一个充要条件，进而，证明了该条件等价於一组线性矩阵不等式的可解性问题，并用这组线性矩阵不等式的可行解给出了保性能控制律的一个参数化表示。

And then, on the basis of this, we put forward corresponding administrative ways which are the inside administration of accounting information, the market control of accounting information, the standard disclosure of accounting information, and system innovation, etc. So, make the systematicness analyses frame of the quality of accounting information take shape.

进而，在此基础上，提出会计信息的内部治理、会计信息的市场控制、会计信息的规范披露以及制度创新等相应的治理途径，从而使会计信息质量的系统性分析框架形成。

The comparison results in a psychophysical experiment demonstrate that all the compensated displays outperform the uncompensated ones.

进而，通过心理物理实验的比较统计结果证明，所有补偿后的显示图像明显优于未补偿的显示图像。

In addition, the concept of scene centriod is introduced to represent video scene by averaging of all key frames inside a group of shots in the given video scene, which makes an audacious attempt for high-level video unit extraction and representation;4 According to the given sample video, shot and scene-based video retrieval methods are discussed respectively, and the evaluation pricinples are also discussed.

进而，讨论了由场景中一组镜头的关键帧的质心表示场景关键帧，即场景质心的方法，从而为抽取高层的视频数据单元做出了大胆的尝试； d 从给定样本视频出发，分别讨论了基于镜头和场景的视频检索方法，并分析了检索性能评价的准则。

Thirdly, basing on the content of feature selection related in Weka which is an open source data mining tool, we propose a new feature selection algorithm based on rough set theory, which viewed the set of core features as the initial set, and define a symmetrical uncertainty measurement method as features correlation evaluating criterion.

进而，在剖析数据挖掘开源工具Weka系统中的属性选择实现的相关内容的基础之上，提出了一种新的属性选择算法，该算法以粗糙集合理论中的核集作为属性选择的初始集合，以对称不确定性作为属性评价方法，综合考虑了属性与类之间和属性与属性之间的相关性。

The date 1879 is usually said to be the start of psychology as a separate scientific discipline, since it was when Wilhelm Wundt created the first psychology laboratory in Leipzig.

通常来说，1879年是心理学成为一个独立的自然科学学科的年份。在这一年，冯特在莱比锡创立了第一个心理学实验室，进而，他也被认为是心理学之父。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。