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Faults of ball milling system in power plant are analyzed by means of fault tree analysis. A fault tree is established that contains faults of ball mill, coal feeder, mill exhauster and separator. The minimal cut set is figured out. The cause for the faults are detailed.

利用故障树分析法对火力发电厂制粉系统的常见故障进行了分析研究，建立了制粉系统的故障树，涵盖了球磨机、给煤机、排粉机、粗细粉分离器的常见故障，求出了其最小割集，给出了制粉系统发生故障的原因及导致故障各种原因组合的可能性。

Fault tree is a tree which can describe the relation between reason and result of the accident, and the method can identify many fatalness of the system and be the same with qualitative analysis and quantitative analysis.

故障树是一种描述事故因果关系的有方向的&树&，该方法能对各种系统的危险性进行识别评价，既适用于定性分析，又能进行定量分析。

The cyprus tree--known as the tree of death for its traditional associations with graveyards and mourning--creates a flamelike connection between the earth and sky.

柏树通常代表着死亡，因为它常常和坟墓、哀悼联系在一起。然而在这里，画家创作出的柏树形象却仿佛是连接天与地的火焰般的纽带。

Tree category are: Yang, Liu, Yu, Sophora, Sorbus, piling, Huangya tree, Gleditsia trees and pine trees.

乔木类主要有：杨、柳、榆、槐、楸、椿、黄芽树、皂荚树和松树。

The phylogenetic analysis of Gymnothorax was reported in this paper by being based on DNA sequences of mitochondrial Cytb gene.17 species of Cytb gene full-length sequences were obtained and their length of Cytb gene was 1140bp.All sequences were analysised by using biological software, the phylogenetic tree was constructed by using three kinds of common contribution phylogenetic tree methods and the phylogeny of 17 species of Gymnothorax was deduced.

本论文采用线粒体Cytb基因为分子标记，共获得裸胸鳝属鱼类17种Cytb基因序列全长为1140bp的部分序列，应用分子生物学软件对结果进行分析，使用3种常见的建树方法：NJ法、ME法和MP法重建系统发育树，对裸胸鳝属17种鱼类的系统关系进行研究，为探讨裸胸鳝属鱼类的分子进化，确定它们之间的关系提供分子生物学方面的证据。

According to the analysis of the variation expectation value, species differentiation time in the CH4 sub-region phylogenetic tree, we found that Chinese sturgeon and the theoretical common ancestor of the other five sturgeon form the first bifurcation of the tree, while, among the five left, Amur sturgeon and Huso sturgeon, Russian sturgeon and Siberian sturgeon, Siberian sturgeon, Sterlte itself form another three bifurcations respectively.

通过对CH4区序列氨基酸变异期望值，物种分化时间及物种间系统进化树等参数的分析，将克隆的5种鲟鱼IgH恒定区序列与已发表的西伯利亚鲟同源序列比对后发现：西伯利亚鲟与俄罗斯鲟、施氏鲟与欧鳇、小体鲟各构成一个分支，并与中华鲟相对。

And then it combined binary tree with LS-WSVM, so that the LS-WSVM multi-class classification model based on binary tree was proposed. The model not only avoids the condition of blind classification and impartibility, but also improves classification speed and generalization ability.

然后，把二叉树结构和LS-WSVM相结合，提出了基于二叉树的LS-WSVM多类分类模型，不仅避免了盲目分类和不可分情况，而且提高了分类速度和泛化能力。

This dissertation, in the light of the limitations of existed methods, suggest an algorithm based on Conception Hierarchy Tree for data mining, constructing tree from bottom to top through the method of variedly dividing interval and realizing conception hierarchy construction and conception exaltation isochronously.

本文针对已有数据分类算法的不足，采用&变间隔分割初始区间&和&概念层次构建与概念提升同步&的方式&自底向上&地构建概念层次树，提出并实现了基于概念层次树的数据挖掘改进算法。

Pterocarya stenoptera, belonging to the Juglandaceae family, is one of the mainlycultivated tree species in the middle and lower reaches of the Changjiang River in China,as well as an important native tree in Hubei province characterized with fast growth andstrong adaptabilities.

枫杨属胡桃科枫杨属，生长迅速、适应性强，是我国长江中下游主要栽培的树种之一，也是湖北省重要的乡土树种。

On either side rocks, cliffs, tree-tops, and a steep slope: forward there, the length of the boat, a tamer descent, tree-clad, with hints of pink: and then the jungly flat of the island, dense green, but drawn at the end to a pink tail.

正前方，在船身的范围之内，地形下降的坡度稍稍缓和一些，绿树将土地覆盖。有的地方露出粉红色的岩石。再过去是岛上伸展开来的平坦而浓绿的丛林，最后以一块粉红色的岩石而告终。

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。