查询词典 major course

In America, the things that matter have been reduced in choice: There are a handful of insurance companies, a limited number of health care providers, seven major information feeds, four big banks, four big energy companies, four pan-American newspapers, four major cellphone companies, and two major political parties.

在美国，真正要紧的东西都没多少选择的空间：为数不多的保险公司，数量有限的医疗机构，七个主要的资讯媒体，四大银行，四大能源公司，四大泛美报纸，四大移动通讯公司，以及两个主要政党。

An optical element such as a rear projection screen for an image display device comprises at least two substantially rigid sheet members each having a first major surface and a second major surface providing a plane of incidence and a plane of emergence, respectively, through which light is transmitted sequentially. A first sheet member comprises a Fresnel lens, and a second sheet member comprises a lenticular lens array on each of the major surfaces thereof.

一种光学元件，例如用于图象显示装置的背投式屏幕（1），包括至少两个基本为刚性各具第一主表面（21；31）和第二主表面（22，32）的板部件（2；3），分别提供顺序穿过光线（10）的入射面和出射面，第一板部件（2）和第二板部件（3）在其各个主表面（31，32）上分别包含一个菲涅耳透镜（24）和一个双凸透镜阵列33，35。

The major gene heritability and polygene heritability were 64.17% and 14.76% respectively, which showed major genes played major role in seed setting rate.

在主基因作用的效应中，加性效应和显性效应各占主基因效应的50％；主基因的遗传率较高，分别为56.97％和44.26％；多基因的遗传率很低，分别为1.24％和3.05％；环境对结实率的影响显著，其方差占总表型方差的43.07％和52.99％。

With the special kinematics and kinetics law of major-minor connecting rod mechanism in gas engine,based on expression function integrated into regular curve and optimizing module provided by UG software,the optimized structural parameters of major-minor connecting rod mechanism were educed through minimizing the differences tribology characteristic between in piston of major cylinder and piston of minor cylinder,and kinematics and kinetics characteristics were reappeared with emulational curve mode.

根据关节式曲柄连杆机构独特的运动学、动力学规律，利用UG软件所提供的表达式、规律曲线和优化等模块，给出使主、副气缸的摩擦学特性尽量保持一致的最佳结构参数，并以仿真曲线的方式再现了运动学和动力学特性的变化规律。

GO and NOT GO Plain Ring and Snap Gages for Checking Major Diameter of Product External Thread: The GO gage must completely receive or pass over the major diameter of the product external thread to ensure that the major diameter does not exceed the maximummaterial-limit.

用于检查产品外螺纹大径的通规与止规普通环规及卡规：这个通规必须完全配合或经过产品外螺纹大径来确保大径不会超过最大实体极限。

The fabric sheet has first (2) and second major faces and small pin-prick sized perforations (6) provided therethrough in the centres of surface depressions or chambers (7) of the first major face (2) and corresponding dome projections (8) of the second major face.

织物片有第一(2)和第二主表面还有许多贯通的小针孔设在第一主表面(2)的表面凹坑(7)和第二主表面的相应圆顶状突起(8)的中心。

By tracing the antifungal and antibacterial activities of the volatile oils, it is found that the major active site in fiuit oil of Litsea mollis is aldehydic fraction such as citral, the major active site in oil of Thymus quinquecostatus is phenolic fraction such as thymol and the major active site in ginger oil is high boiling-point terpenic constituents such as β-caryophyllene, eudesm-4 (14)-en-11-ol, et al.

通过抗菌活生追踪发现，毛叶木姜子果油的主要活性部位是醛类成分，如柠檬醛；地椒油的主要活性部位为酚类成分，如百里香酚；姜油的主要活性部位为"高沸点萜类组分"，如β-丁香烯、4（14）-桉叶油烯醇-11等。

A major portion of the population; Ursa Major; a major portion of the winnings.

大部分人口；大熊星座；成功的大半。

By tracing the antifungal and antibacterial activities of the volatile oils, it is found that the major active site in fiuit oil of Litsea mollis is aldehydic fraction such as citral, the major active site in oil of Thymus quinquecostatus is phenolic fraction such as thymol and the major active site in ginger oil is high boiling-point terpenic constituents such as β-caryophyllene, eudesm-4 (14)-en-11-ol, et al.

通过抗菌活生追踪发现，毛叶木姜子果油的主要活性部位是醛类成分，如柠檬醛；地椒油的主要活性部位为酚类成分，如百里香酚；姜油的主要活性部位为&高沸点萜类组分&，如β-丁香烯、4（14）-桉叶油烯醇-11等。

During his compactedly scheduled state visit, President Ciampi had successive talks and meetings with Chinese leaders Premier Wen Jiaobao and President Hu Jintao as well as some Chinese senior officials, including Dai Xianglong, Major of Tianjin, Wang Qishan, Major of Beijing, Yuan Chunqing, Deputy Secretary of Shanxi Province Committee, Han Zheng, Major of Shanghai and Wei Jiafu, President of China Ocean Shipping Company.

12月5日上午，钱皮总统在意大利驻华使馆与天津市市长戴相龙等举行了会谈，就进一步推进中意友好往来与经贸合作、搞好天津的意式风情区修缮保护及2005年10月在意大利举办中国天津文化周等事宜进行了交换了意见。会见后，钱皮总统与戴相龙一起观看了在大使馆举办的&天津之路—意大利和中国的千年纽带&历史图片展。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。