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In order to reconstruct them accurately, a method for fitting the ellipse based on the principle of conditional least square was applied at first, and then its fitting result was used as an initial value to find a more precise result according to the polar line geometrical properties of the ellipse.

为了实现精确建模，本文首先运用一种基于带约束的最小二乘方法对数据点进行拟合，然后用拟合的结果作为初值，根据椭圆的极线性质进行更精确地求解。

In order to investigate the effect of IFN-γon the expression of TNF-αin the hypothala- mus-pituitary-ovary axisof RU486-induced aborted SD rats, RU486 was used to establish the abortion model, then the aborted rats were administrated with different doses of IFN-γintraperitoneal injection, the method of immunohistochemical ultrasensitive SP was us- ed to study the variation of positive TNF-αcells in hypothalamus, pituitary, ovary and uterus in normal pregnant group A, aborted model group B and three different doses of IFN-γgroup C,D,E. The main goal of this research was to study whether the low dose of IFN-γcould have a protective function to pregnancy and the mechanism of its function so as to provide morph- ologic basis for the scientific using of IFN-γin the process of animal abortion control.

为探讨IFN-γ对流产大鼠下丘脑-垂体-卵巢轴(hypothalamus-pituitary- ovary-axis，HPOA )TNF-α表达的影响，本试验用米非司酮(RU486)建立SD大鼠流产模型，通过腹腔注射不同剂量IFN-γ，采用超敏感免疫组织化学SP法(链霉素抗生物素—过氧化物酶法)，观察了孕13天(d13)SD大鼠正常妊娠A组、流产模型B组、不同剂量IFN-γC、D、E组下丘脑、垂体、卵巢、子宫TNF-α的表达变化，探讨低剂量IFN-γ对妊娠是否有保护作用及其作用机制，期望能为在妊娠过程中如何科学应用IFN-γ防止动物流产提供形态学依据。

In order to further reveal the damage mechanisms of repetitive frequency laser the influence of repetitive frequency laser pre-conditioning on the absorption of optical coatings was also investigated.

为了进一步分析损伤机制，研究了重复频率激光预处理对光学薄膜吸收的影响。

Objective There exists the occurrence possibility of acute poisoning accident in the oil refining process in the petrochemical company. The quantitative risk analysis was made predictively for the consequence of acute poisoning caused by high toxic substances in order to put forward the countermeasures scientifically on the aspect of emergency rescue and management.

目的 某新建石油化工企业炼油生产工艺过程存在急性中毒事故的可能性，针对高毒物质造成的急性中毒后果进行定量预测分析，以科学地在应急救援及管理方面提出相应的对策。

In order to discover the problems of English teaching of lower grades in primary school and analyze the causes, the study is made on the basis of YF primary school.

建构主义学习理论是本文的理论基础，小学生的心理特点则为教学设计的构建提供了心理学依据，在此基础上本文提出了YF小学低段英语的教学设计。

Today,we should examine the spriritual essence of the obscure poem on the basis of the connection point of the principal spirit and whole social groups as well as the epochal spirit in order to further confirm its meaning and value in comtemporary literiture.

所以，要对朦胧诗的意义和价值作出判断，就必须从它的人本主义价值观入手。所谓人本主义，是指以人作为衡量一切的尺度的一种价值理念，其源头可以追溯到古希腊的哲学思想。

"Order in council - In Britain, a regulation traditionally issued by the sovereign on the advice of the Privy Council."

枢密令-在英国，传统上为君主根据枢密院建议发布的条例。

In order to exactly evaluate the submarine cruise missile shot probability, the paper establish a new index system based on the analysis of factors of the system.

为准确评价潜射巡航导弹的命中概率，对影响命中概率的因素进行了具体分析，建立了潜射巡航导弹命中概率综合评价的指标体系。

In the world's great struggle against Fascism, in the sacred cause of the Asian, African and Latin American people fighting for national independence and liberation, and in the tireless efforts to promote the establishment of a fair and rational new international order, we have always stood on the side of justice and worked in unity with the people of all countries and all the progressive forces in the world.

在世界反法西斯的伟大斗争中，在亚非拉人民争取民族独立和解放的神圣事业中，在推动建立公正合理的国际新秩序的不懈努力中，我们都始终站在正义一边，同各国人民和世界上一切进步力量一起团结奋斗。

These days with there being the gap in the precision and the capability of numerical control machine between our country with international advance level, this paper puts forward the projet of multiple axes rotary spindle head structure on the foundation of setting up direct drive technology, in order to satisfy needs of exceed high speed cutting and exceed precision machining.

目前国产数控机床精度、性能与国际先进水平还存在一定差距，文中在建立了直接驱动技术概念的基础上，介绍了万能自动镗铣头结构方案，以满足超高速切削、超精密加工等先进制造技术的需要。

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。