基本力

This paper developed a vibratory tapping chuck base on vibratory cutting principle.The characteristic of the vibratory cutting force using the chuck is investigated by large number of experiments.

文摘：本文根据振动攻丝基本原理，研制出具有振动攻丝功能的振动攻丝卡头，并利用该卡头对振动攻丝切削力变化特点进行了大量的实验研究。

On the basis of the former researches and taking into account the practice of our country, this paper take the low period repeat loading experiment for three rigid conjunction node of steel beam and concrete wall, researching their load-bearing capacity and earthquake resistance performance under the low period repeat loading action, the main content concentrate on the following aspects:(1) Analyzing the three joint's damage shape、hysteretic curve、change of rigidity、yielding load、limit load、damage load、durability、energy dissipation capacity、the strain of the key position and the moment transferring mechanism.(2) Comparing the joint's load-bearing capacity and earthquake resistance performance among the joints with different stud bolt diameter and different connection plate thickness, researching some factor's influence on the work performance of the joint such as the high and strong stud bolt specification、connection plate thickness .

本文在前人研究的基础上，结合我国的实际情况，对3个钢梁-混凝土墙刚接节点试件进行了低周反复荷载试验，对其在低周反复荷载作用下的承载力和抗震性能进行了研究，内容主要集中在以下几个方面：(1)对3个节点试件在低周反复荷载作用下的破坏形态、滞回曲线特性、刚度变化、屈服荷载、极限荷载、破坏荷载、延性性能、耗能能力、关键部位的应变分布情况及节点核心区的受力情况进行了试验研究和理论分析；(2)比较了不同螺栓规格和不同连接板厚度的节点试件的承载力和抗震性能，研究了高强螺栓规格和连接板厚度这2个因素对节点工作性能的影响；(3)介绍了光纤光栅传感技术在土木工程领域中的应用研究现状及其基本原理；并通过对比试验，探讨了光纤光栅传感器用于土木工程检测的可行性及实现途径。

The development of drill string mechanics is discussed from the perspectives of the introduction of the topic, the research objective, the methods employed for the research, the motion behavior of the drill string, the fundamental equation for of drill string dynamics, the tension and torque of the drill string, the elastic stability of the drill string, the stress analysis of the bottom hole assembly, the drill string vibration and swirling.

从钻柱力学问题的提出、研究目标、研究方法、钻柱的运动状态、钻柱动力学基本方程、钻柱的拉力扭矩、钻柱的弹性稳定性、底部钻具组合受力、钻柱振动与涡动等方面分析了钻柱力学的发展状况。

Abundant of VST, CPT, DMT tests data and the finite element analysis result are applied to get the distribution and increasing rule of strength of silt in consolidation process. The relation between the strength and depth is linear before and after consolidation. The strength-increasing rates are different in different horizontal places.

通过大量的十字板剪切试验、静力触探试验和扁铲侧胀试验，并结合有限元分析结果，研究了淤泥抗剪强度的分布规律和排水固结过程中抗剪强度的增长规律，发现排水固结前后淤泥路基强度基本随深度增加线性增长，排水固结过程中水平方向的抗剪强度增长速度不同。

This thesis is based on October 8, 2005 7.6-level earthquake reconstruction in the Pakistan disaster areas. Pakistan Earthquake Bureau designed the architectural standard as the background of the China-Pakistan cooperation project, and a sub-project under the standard is discussed in this thesis. Ordinary sintering brick and stone-dust mortar masonry are set as window walls of masonry walls construction, which is also the object in this thesis. Based on the quasi-static experiment, the masonry walls earthquake damage patterns and seismic behavior are studied, underlining Pakistan formulation of the unified national standards for architectural design with basic data.

本文以2005年10月8日巴基斯坦发生7.6级地震后灾区重建、巴国地震局制订建筑设计规范为背景，以烧结普通砖和石头粉砂浆砌筑的窗间墙砌体墙片为对象，以拟静力试验为基础，研究了砌体墙片抗震的破坏形态和抗震性能，为巴基斯坦制订全国统一的建筑设计规范标准提供了基本试验数据，同时也为砌体墙片抗震性能研究提供了一种有限元计算方法。

Therefore,to develop students' creativity with all kinds of methods in all links of teaching is highly demanded in vocal music teaching,which is useful to help students master the singing skills and improve students' ability to analyze,comprehend,apprecia...

在各个教学环节中综合运用各种手段培养学生原创力，是对学生个性化潜能地挖掘，是声乐教学地需要，有利于学生对歌唱基本技能技巧地掌握，有助于提高学生对声乐作品的分析、理解、鉴赏、再创作和音乐表现能力。

According to the basic principle of self-balanced pile test method and the conversional simplified conversion method, the pile bearing capacity between the equivalent loaded piles and self-balanced piles were compared. The influence of negative skin friction on self-balanced pile test was studied. The conversion formulas of pile bearing capacity and settlement were derived.

根据自平衡测试法的基本原理，在传统简化转换法的基础上，通过等效受压桩和自平衡试桩上下桩段受力情况的对比分析，研究了负摩阻力对自平衡测试原理的影响，推得了桩承载力和位移的转换公式。

Result:(1) The max supporting weight of saddle-backed waist splint is 90 kg in the bed exercise, applicable to people who have spine length 73cm~67cm( about body height 178cm~165cm)(2) the height of the gas filled pillow is 5cm~15cm (3) The height of the gas filled pillow should be adjusted according to different patient (4) the press on the abdomen deliver by front part of saddle-backed waist splint is 3336 kpa; Standard piece of waist line is 94cm~70cm, elastic force is 180N .

结果：﹙1﹚鞍式腰托在卧床锻炼时的最大承重量为90㎏，适用脊柱长度为 73 ㎝67 ㎝（约身高178 ㎝165 ㎝）。﹙2﹚充气垫枕的高度为5㎝15㎝。﹙3﹚针对不同病人的身高﹐应适当的调整充气垫枕的高度以及指导锻炼时的拉伸高度。﹙4﹚下地后鞍式腰托前板能给腹部压力为3336kpa；标准件的弹性腰围为64㎝ 90㎝﹑弹性力为180N。结论：鞍式腰托在通过力学测试以及临床应用﹐已基本符合脊柱胸腰段（T11L2）椎体屈曲型稳定性压缩骨折的复位要求，具有简便安全而有效的整复与固定作用。具有较强的实用性，值得进一步研究开发。

In design of anti-sliding pile, the most foundation and most important problem is how to determine the distribution feature of the interaction force between anti-sliding pile and surrounding rock under pushing force of sliding body, that is the distribution feature of sliding pushing force and remnant resistant sliding force.

在抗滑桩设计中一个最基本、也是最重要的问题是确定抗滑桩在滑坡体推动下，桩身与周围岩土体之间作用力的分布特征，即滑动面以上滑坡推力与剩余抗滑力的分布特征。

According to partial frequency and relative damping ratio,a new design method for calculating the rigidity parameters of the torsion bar and damping parameters of the shock absorber is presented.

在机构运动分析的基础上，导出了精确分析悬架受力、刚度和阻尼特性的基本公式，给出了按选定的偏频和相对阻尼比确定扭杆刚度和减震器阻尼参数的设计步骤。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。