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In this paper four non-spherical surface types have been chose, ellipsoid surface, parabolic surface, pointed arch surface and conical surface. Base on the best fineness ratio, four surfaces are modeled, and their properties are analyzed in detail.

本文选择椭球面、抛物面、尖拱面、圆锥面这四种非球面面型整流罩，在基于整流罩最优的长径比的基础下，对各种情况分别进行建模，并对其光学性能进行了详细分析。

As the wisdom crystal of the second Party's leading group, the policy not only conforms to the objective facts, but also meets the needs of the Party and the people. Through the analysis on the cadre's four transformations insisted by the third leading group with the core of Comrade Jiang Zeming, it shows that, in the new historic period, according to the principle of the four transformations to bring about the cadres more revolutionary, younger, more professional as well as the principle of being red and expert, to make the leading groups of different ranks a strong leading organization loyal to the Marxism, sticking to the socialist road with Chinese features, is the basic policy to guarantee the continuousness of the Party's route and the country's safely for long.

这是党的第二代领导集体智慧的结晶，它既符合客观实际，又大得党心民心；通过对以江泽民同志为核心的第三代领导集体坚持干部"四化"方针历程的分析，说明在新的历史时期，按照干部队伍革命化、年轻化、专业化的方针和德才兼备的原则，把各级领导班子建设成为忠于马克思主义，坚持走有中国特色社会主义道路的坚强领导集体，是保证党的路线的连续性和国家长治久安的根本大计。

There were four walls, a floor and a roof, which made one room; and this room contained a rusty looking cookstove, a cupboard for the dishes, a table, three or four chairs, and the beds.

因为建筑屋子的木材，要从好几里路之外用货车载运过来，很不容易，所以他们住的一间屋子只是小小的、四垛板壁、一个屋顶和一堂地板构成的，屋子里有一个外面锈污了的烧饭用的炉灶，一口放盆碟的橱，一张桌子，三、四张椅子，还有两张床。

There were four walls, a floor and a roof, which made one room; and this room contained a rusty looking cookstove, a cupboard for the dishes, a table, three or four chairs, and the beds. Uncle Henry and Aunt Em had a big bed in one corner, and Dorothy a little bed in another corner.

因为建造房子需要的木材要由马车从遥远的地方运过来，房子是四面都是用木板墙围成的，地下是木板，上面也是木板房顶，屋里面放着一个生满了铁锈的火炉子，有一个用来装碗的柜子，有一张木桌，还有几把凳子和两张睡床。

Copulative" added:"the actual occurrence of YI Tai Chi is a health astrotech, astrotech Health four images, four images and Health and gossip, gossip be good or bad fortune, good or bad fortune health cause.

在中国古代文化中，盘古是一位创世大神，而且公认其产生年代是在东汉时期，与佛教的传入有关，当然它不可能是阴阳、太极、八卦图的"原生图式"。

John Ringwalt's homestate operation now consists of five companies, with Kansas Fire and Casualty Company becoming operational late in 1977 under the direction of Floyd Taylor. The homestate companies had net premium volume of $23 million, up from $5.5 million just three years ago. All four companies that operated throughout the year achieved combined ratios below 100, with Cornhusker Casualty Company, at 93.8, the leader. In addition to actively supervising the other four homestate operations, John Ringwalt manages the operations of Cornhusker which has recorded combined ratios below 100 in six of its seven full years of existence and, from a standing start in 1970, has grown to be one of the leading insurance companies operating in Nebraska utilizing the conventional independent agency system. Lakeland Fire and Casualty Company, managed by Jim Stodolka, was the winner of the Chairman's Cup in 1977 for achieving the lowest loss ratio among the homestate companies. All in all, the homestate operation continues to make excellent progress.

John Ringwalt 负责的 Homestate 业务旗下主要包含五家公司，其中堪萨斯火险在 Floyd Taylor 筹备下于1977年底正式营运， Homestate 1977年的保费净收入达到2，300万美元，三年前不过只有550万美元，其余四家的年度综合比率都低于100，其中 Cornhusker 甚至只有93.8， John 在努力管理其它四家公司的同时，更让 Cornhusker 过去七年有六年的综合比率低于100，从1970年正式营运以来，该公司已顺利成为内布拉斯加州传统独立经纪系统的领导业者，至于由 Jim Stodolka 带领的 Lakeland 火险则荣获1977年主席杯的头衔，因为去年该公司的综合比率最低，总的来说， Homestate 集团的营运在去年大有进展。

John Ringwalt's homestate operation now consists of five companies, with Kansas Fire and Casualty Company becoming operational late in 1977 under the direction of Floyd Taylor. The homestate companies had net premium volume of $23 million, up from $5.5 million just three years ago. All four companies that operated throughout the year achieved combined ratios below 100, with Cornhusker Casualty Company, at 93.8, the leader. In addition to actively supervising the other four homestate operations, John Ringwalt manages the operations of Cornhusker which has recorded combined ratios below 100 in six of its seven full years of existence and, from a standing start in 1970, has grown to be one of the leading insurance companies operating in Nebraska utilizing the conventional independent agency system. Lakeland Fire and Casualty Company, managed by Jim Stodolka, was the winner of the Chairman's Cup in 1977 for achieving the lowestloss ratio among the homestate companies. All in all, the homestate operation continues to make excellent progress.

John Ringwalt负责的Homestate业务旗下主要包含五家公司，其中堪萨斯火险在Floyd Taylor筹备下于1977年底正式营运，Homestate 1977年的保费净收入达到2，300万美元，三年前不过只有550万美元，其余四家的年度综合比率都低于100，其中Cornhusker甚至只有93.8，John在努力管理其它四家公司的同时，更让Cornhusker过去七年有六年的综合比率低于100，从1970年正式营运以来，该公司已顺利成为内布拉斯加州传统独立经纪系统的领导业者，至于由Jim Stodolka带领的Lakeland火险则荣获1977年主席杯的头衔，因为去年该公司的综合比率最低，总的来说，Homestate集团的营运在去年大有进展。

If we are to assume Andy Pettitte, who has had clunkers in three out of his last four starts, has just hit an inevitable and correctable lull, there is reason to believe the Yankees can count on four out of five good starts through most turns.

我们假设Andy Pettitte 最近4场先发有3场表现不佳，只是无可避免的暂时低潮，我们就很有理由相信洋基可以倚靠每5场先发大多会有4场好的。

Polymorphism was detected for exon 3 of BMP4 gene in four sheep breeds. For exon 3, three genotypes were detected in four sheep breeds. In Small Tail Han, Chinese Merino, Corriedale and South African Mutton Merino sheep, frequency of genotype AA was 0.017, 0.216, 0.115, 0.429, frequency of genotype AB was 0.102, 0.317, 0.269, 0.500, frequency of genotype BB was 0.881, 0.467, 0.616, 0.071, respectively. Sequencing revealed one singlenucleotide mutation C→A at 305 bp of exon 3 of BMP4 gene in genotype BB in comparison to genotype AA, and this mutation resulted in an amino acid change of alanine→aspartic acid.

对于外显子3的引物，在4个绵羊品种中都检测到3种基因型；统计结果表明：小尾寒羊、中国美利奴绵羊、考力代绵羊、南非肉用美利奴绵羊AA基因型频率分别为0.017、0.216、0.115、0.429，AB基因型频率分别为0.102、0.317、0.269、0.500，BB基因型频率分别为0.881、0.467、0.616、0.071；测序结果表明：BB型和AA型相比在BMP4基因外显子3第305位碱基处发生C→A的突变，该突变导致氨基酸由丙氨酸改变为天冬氨酸；BB型小尾寒羊平均产羔数分别比AB型和AA型多0.61只（P.05）和1.01只（P.05）。

It utilizes its four valence electrons completely in the establishment of four covalence , its valence shell becomes saturated.

碳原子能够利用其全部四个价电子构成共价键，并形成稳定的饱和价电子层。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。