主要

The wellhead part mainly includes the controlling device, the pneumatic valve, the blowout control box, the damping spring and the plunger catcher, and the downhole part consist of the combination tubing, the buffer spring, the tubing spider and the plunger which reciprocated between the tubing.

井口部分主要包括控制器、气动阀、防喷盒、减震弹簧、柱塞捕捉器；井下部分主要包括大小油管、缓冲弹簧、油管卡定器，以及在大小油管间往复运动的柱塞。

The spoken content, mostly braggadocio spiced with fantasy, was derived largely from a pool of material used by most of the earlier rappers.

讲话的内容，主要说大话加香料以幻想，从材料水池主要被获得了由大多更加早期的交谈者用于。

Knowledge industry and other industry are disparate, basically be engaged in intellectual production, yielding product is intellectual product, its are main resource is intellective resource, generator is a brainworker.

知识产业与其他产业不同，主要从事知识生产，产出的产品是知识产品，其主要资源是智力资源，生产者是脑力劳动者。

Part Ⅰ, Progress on Treatment of Branchial Asthma in Children, discusses detailedly the pathogenesis, primary remedies and current therapeutic problems of branchial asthma in children from the point view of Western medicine.

综述一"儿童支气管哮喘治疗进展"，主要从现代医学对儿童支气管哮喘的发病机理、主要治疗药物以及目前西医治疗存在的问题等方面进行较详细全面的论述。

Keith: Why would the people of Quebec want to break ties with the rest of Canada? I know most people in Quebec speak French. Is the language difference the main reason?Geoff: Language is certainly part of it, but I think it has more to do with cultural differences in general. The French speaking population in Quebec feels discriminated against by the English speakers. It seems that the English culture is too dominant.

首先、 Keith 想知道为甚麼魁北克的人想要和加拿大断绝关系，他怀疑语言是不是一个主要的因素； Geoff 解释说，语言当然是部份的原因，但是主要的原因是文化的差异，说法语的魁北克人认为他们受到说英语的加拿大人歧视，他们认为英语的文化太有影向力了。

This thesis focuses on analyzing the horizontal and vertical resolution of the main data reasonably, data fitting, residual analysis and the projections of the potential breakdown of one thousand cars in the future and it also illustrates the main batch production cars, sold time, maintenance time, maintenance parts, causes and extent of damage, repair costs, etc in the maintenance of data tables.

主要解决了横向数据与纵向数据的合理性分析，数据拟合与残差分析以及对未来千车故障数的预测。维修数据表主要包含哪个批次生产的轿车、售出时间、维修时间、维修部位、损坏原因及程度、维修费用等等。

In this paper, the factors that may cause crack breaking of concrete pavement of several built highways were analyzed systematically and thoroughly. From analysis to site experiments and calculation, it is believed that crack breaking is mainly caused by factors as follows: 1 、 Unqualified sedimentation and losing stabilization of the roadbedinduced crack in the early; 2、 Construction technology、 materials and incorrect treatment methodswere adopted;3 、 Crack breaking induced by thermal stress; 4、 Water cant circulate makes crack cause;With regard to the afore-mentioned problems, corresponding preventive measures, qualified control indices and site control approach are presented based on analysis theory and site experiments.

本文在全面系统地分析已建成的高速公路水泥混凝土路面产生的原因的基础上，通过现场试验及计算分析，确定了高速公路水泥混凝土路面裂缝的主要影响因素有以下几个方面： 1、路基的不均匀沉降、失稳是早期裂缝产生的主要因素； 2、施工工艺、材料问题及养护方法不当； 3、温度应力产生的裂缝； 4、排水不畅影响裂缝产生；针对上述问题，通过理论分析及现场数据提出相应的质量控制目标、现场控制方法。

Note values were generally larger than are in use today; the primary unit of beat was the semibreve, or whole note. As had been the case since the Ars Nova, there could be either two or three of these for each breve(a double-whole note), which may be looked on as equivalent to modern "measure", thought it was itself a note value and a measure is not.

音符时值通常都比当今我们使用的要大，节拍的主要单位是全音符，它从中世纪起就是节拍的主要单位，也许以现代节拍度量的标准来看，2个或者3个全音符构成一个二全音符，虽然它本身是一个音符时值和一个。

This article analyzed the early disease of flexible bridge deck pavement of steel concrete bridge as well as the cause of it.

对钢筋混凝土桥柔性桥面铺装的早期病害及其原因进行了分析，在总结当前国内桥面铺装结构分析主要方法的基础上，通过理论分析，提出了用有限元进行结构分析时，需要重点研究的几个问题，指出了今后主要的研究方向。

The professional content management system, including the papers submitted papers to amend, review papers and user management In the development process, the attention to bring it into conformity with the operation of business processes and systems to the comprehensive, universal, making the system not only applies to an educational institution In the development of methods of choice and chose a life cycle with the prototype of the method of combining law, follow the system research, systems analysis, system design and implementation of four major stages of system design, and in the specific design, to take the evolution of Prototype, with the use and users of the system have deepened the understanding of a certain part or parts of re-analysis, design, implementation In the development of the choice of language, using mainly carried out ASP programming language development, the use of SQL databases, so as to ensure data integrity and consistency This results mainly from system analysis, system design, systems implementation and use of several areas are introduced

本系统管理内容专业，包括论文提交、论文修改、论文审核以及用户管理等等。在开发过程中，注意使其符合操作的业务流程，并力求系统的全面性、通用性，使得本系统不只适用于一家教育机构。在开发方法的选择上，选择了生命周期法与原型法相结合的方法，遵循系统调查研究、系统分析、系统设计和系统实施四个主要阶段进行设计，而在具体的设计上，采取了演化式原型法，随着用户的使用及对系统了解的不断加深，对某一部分或几部分进行重新分析、设计、实施。在开发语言的选择上，主要利用ASP 编程语言进行开发，使用SQL数据库，从而保证了数据的完整性与一致性。

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。