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Based on random signal theory, in order to quantitatively research drilling string by vibration measurement method, the article sketches out a new methodthe identification of drillstring system using the cross correlation function. Using input signal, and output signal, the impulse response of drill-string is obtained. Some problems...

在随机信号理论基础上，提出了一种用互相关辨识钻柱系统的新方法；结合输入信号和输出信号，利用钻柱系统的脉冲响应，讨论了钻柱的临界转速、钻柱共振、钻柱与井壁之间的相互作用、所钻地层岩性等钻井工程问题。

This article focuses on the line-line, line-region and region-region topological relations algorithm, which come down to the same question: whether there are intersections between line and line. The sweep-line algorithm was studied by many people, but has some deficiencies to be improved, in order to handle some special cases and increase program efficiency. My works as follows: rectangular envelope to reduce executive times , vector cross multiplication to determine intersection between line and line, coordinates and slope method to deal with some special cases. C program examples are showed together.(5) Finally, to prove capability and efficiency of the model and calculation method, some test systems are developed. For example, complex spatial topological relation query, parcels' exact area with the area of linear object reduced in land use, quality inspection to cadastral data according to topological rule, spatio-temporal change query of cadastral data.

将线线、线面、面面之间的拓扑关系实现的算法归结为线与线之间求交的基本问题；为处理一些特殊的拓扑关系情况，提高扫描线算法的效率，探讨了包络矩形粗滤、判断线线是否相交的矢量叉乘法、线节点重合或共线的斜率坐标判断法等改进方法；同时还设计了一种新的节点微小圆求交的算法，可应用于图斑与线状地物细分拓扑关系及地类面积的计算；（5）本文设计了实验系统，包括复杂对象的拓扑关系表达与计算程序、图斑地类面积的计算程序、基于空间拓扑关系规则的地籍数据库质量检查功能，以及时空拓扑关系和变化语义分析等原型，验证了拓扑关系表达模型和计算方法的可行性和实用性。

In this article, drawing method for grain composition curve by cubic spline function on computer is expounded, calculation method of sediment weight percentage for different grain-size classification is also put forward.

阐述了在计算机上如何利用三次样条函数用数学的方法绘制颗分曲线，并提出小于各粒径级别的沙重百分数的方法。

Article 8 : At the start, each rider will receive a brevet card and a cue sheet indicating the route and the location of the checkpoints. Riders must stay on the route. If a rider leaves the route, they must return to the route at the same point prior to continuing, ie. no shortcuts or detours from the route, unless specified by the organizer. Riders must stop at each checkpoint to have their card stamped.

第八条：比赛开始时，所有挑战者将会收到一张资格卡以及路线图，这张路线图上会指出比赛的路线还有检查站的位置，挑战者在比赛途中不得驶离规划路线，若挑战者驶离规定路线，则需回到他脱离路线的原点始得继续比赛，也就是说除主办单位另有规定外，不得抄捷径或是绕路。

Article 49 Administrative and financial expenses incurred by enterprise's administrative sectors for organizing and managing production and operation, purchase expenses on commodities purchased, and sales expenses for selling commodities and providing service, shall be directly accounted as periodic expense in the current profit and loss.

第四十九条企业行政管理部门为组织和管理生产经营活动而发生的管理费用和财务费用，为销售和提供劳务而发生进货费用、销售费用，应当作为期间费用，直接计入当期损益。

Article 3 The Processing Zone is a special area supervised by customhouse.

第三条加工区是海关监管的特定区域。

Article 23 Export of products turned out by foreign-funded enterprises is exempt from customs duties.

第二十三条外商投资企业生产的产品出口免征关税

This article on the game teaching goal, the duty, the significance, the characteristic, the organization and the request, teaches the law and the matters needing attention and so on carries on the discussion, compared to teaches the cut-and-try method through the game teaching to carry on the analysis to its result, and proposed the correlation suggestion, has the innovation by the time, enters the new content for the school sports development, causes the sports teaching to become truly promotes the student physical and moral integrity, full scale development important constituent.

本文就游戏教学的目的、任务、意义、特点、组织和要求，教法和注意事项等进行探讨，通过游戏教学比较实验法对其结果进行分析，并提出相关建议，以期有所创新，为学校体育发展注入新的内容，使体育教学真正成为促进学生身心健康，全面发展的重要组成部分。

This article utilizes the literature material law, the questionnaire survey procedure, the teaching cut-and-try method carries on the analysis to the middle school sports teaching, discovered the question includes: As a result of the birth control policy implementation, in the Wei County two middle-school students the only child increases day by day, the child becomes in the family the treasure, the elder dotes on has Canada, in addition the social life level unceasing enhancement, the child nutrition surplus situation remarkable increase, a student physique front year obviously drops, therefore the middle school physical education becomes everybody attention gradually the focal point, how very good physical education, how does cause the student to like on the physical education, how finally causes the physical education to become the student to grow the growth important curriculum, namely the physical education plays truly imparts knowledge and educates people in the school should get up nurtures the human, nurtures the body the vital role.

本文运用文献资料法，问卷调查法，教学实验法对中学体育教学进行剖析，发现的问题有：由于计划生育政策的实施，威县二中学生中独生子女的日益增多，孩子成为家中之宝，长辈宠爱有加，再加上社会生活水平的不断提高，孩子营养过剩的情况显著增加，学生体质较前些年明显下降，因此中学体育课逐渐成为大家关注的焦点，怎样上好体育课，怎么样使学生喜欢上体育课，最后怎样使体育课成为学生生长发育的重要课程，即体育课真正起到在学校教书育人中所应起到的育人、育身的重要作用。

This article utilizes the literature material law the questionnaire survey procedure the teaching cut-and-try method carries on the analysis to the middle school sports teaching discovered the question includes: As a result of the birth control policy implementation in the Wei County two middle-school students the only child increases day by day the child becomes in the family the treasure the elder dotes on has Canada in addition the social life level unceasing enhancement the child nutrition surplus situation remarkable increase a student physique front year obviously drops therefore the middle school physical education becomes everybody attention gradually the focal point how very good physical education how does cause the student to like on the physical education how finally causes the physical education to become the student to grow the growth important curriculum namely the physical education plays truly imparts knowledge and educates people in the school should get up nurtures the human nurtures the body the vital role.

中文摘要本文运用文献资料法，问卷调查法，教学实验法对中学体育教学停止剖析，发现的问题有：由于计划生育政策的实施，威县二中学生中独生子女的日益增多，孩子成为家中之宝，长辈宠爱有加，再加上社。。。本文运用文献资料法，问卷调查法，教学实验法对中学体育教学停止剖析，发现的问题有：由于计划生育政策的实施，威县二中学生中独生子女的日益增多，孩子成为家中之宝，长辈宠爱有加，再加上社会生活水平的不断提高，孩子营养过剩的情况显著增加，学生体质较前些年明显下降，因此中学体育课逐渐成为大家关注的焦点，怎样上好体育课，怎么样使学生喜欢上体育课，最后怎样使体育课成为学生生长发育的重要课程，即体育课真正起到在学校教书育人中所应起到的育人、育身的重要作用。

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。