查询词典 posture

There is a small action range in archery.Simple methods and analysis is inadequate,so the author,on the basis of testing the archery athletes in national team with the Qualisisy infrared photoelectric testing system,Footscan sole pressure testing system,Noraxon myoelectricity remote testing system, etc,analyzes comprehensively the action technique of the athletes in national team from the posture,body motion characteristics,body posture equilibrium and stability,distribution of centre sole pressure, myoelectricity characteristics,etc,with the methods of relative software and data statistics.The conclusions and the suggestions are as follows:Conclusion:Firstly,the communality of posture angle,muscle strength,the activation order of main muscle during raising the bow, raising the bow and the timing of the raising could be used as the evaluation index of technique action in archery;Secondly,the length of the time needed in the different periods couldn\'t be used as technique evaluation index since it has no relation with the result.But the time of raising and pulling back the row is relatively fixed,and the time has a positive relation with the archery achievement of the national team in China.Thirdly,the central index of the sole pressure could be used as the reference criterion of selecting athletes and forecasting achievement.During playing archery,the interrelation between the central index of the sole pressure and the achievement is different individually and in different periods.Fourthly,there is low stability of the archery athletes in the front and back direction during the action, caused by the athletes\' posture disequilibrium of dorsal abdominal muscle and non-professional sport shoes..Fifthly,kinematics and electromyography shows that the people on archery in China haven\'t taken the raising and pulling back the row seriously.

射箭的肢体动作幅度小，简单的手段和分析不能满足其需要，笔者结合各种运动生物力学仪器优点及射箭项目的特性，选用Qualisisy红外光点测试系统、Footscan足底压力测试系统、Noraxon肌电遥测系统等对国家队射箭队运动员进行多方位的测试，运用相关软件及数理统计方法，对运动员的射箭动作技术，从射箭动作的姿态构架、肢体运动特点，身体姿态平衡稳定性、足底压力中心分布、肌电特性等进行全面分析，结论及建议如下：结论：第一，姿态角、肌肉用力激活程度、举弓阶段主要用力肌肉激活顺序、举弓、开弓时间等的一致性可作为射箭技术动作评价指标；第二，各动作阶段所用时间的长短不能作为技术评价指标，但举、开弓的时间相对较固定，开举弓时间比与中国国家队射箭成绩正弱相关达到显著性；第三，闭眼状态下足底压力中心单位面积轨迹长与144支箭最好成绩正相关达到显著性，可作为身体素质、选材及成绩预测的参考依据；实射时身体平衡的足底压力中心指标与成绩的相关程度具有个体性差异、阶段性差异；第四，射箭运动员实射时身体在前后方向上的稳定性较差，这与运动员的站立姿态、腹背肌力量的不匹配以及射箭没有专业运动鞋有关；第五，运动学及肌电学都表明中国射箭训练对举弓、开弓阶段的重视不够，背部肌肉用力特征不明显，撒放技术合理性不高。

In fact, the control problems of the sonar array posture are track control problems. So On the basis of theoretic study, the author designs the robust output track control of the posture of the sonar base with regulable parameter and applies the study results of measurable disturbance decoupling and robust output track to the minehunting sonar array posture control, a robust control strategy with disturbance decoupling, output track and compensation for uncertainty is found.

猎雷声纳基阵的姿态控制问题实质上是跟踪控制问题，在进行理论研究的基础上，作者设计了具有可调参数声纳基阵姿态鲁棒输出跟踪控制系统，并基于反馈线性化方法将可测干扰解耦研究结果与鲁棒输出跟踪研究结果相结合，形成了同时具有干扰解耦、输出跟踪和不确定性补偿的猎雷声纳基阵鲁棒控制策略。

The main body of a book being guided by the ergonomics theory , point out healthy hidden trouble necessity a key that can happen cause such as "student occupational disease "", white collar occupational disease " by analysing operation posture and seat posture using a computer and reading the go-betweens who work with writing this two kind seat posture,especially specifically for at present handle official business this used personal influence to keep healthy and the cerebrum because "the structure defect " seat is able to hinder the body from using personal influence, thinking ability Er Yan of being not worth fitting that the chair has designed that is all-important.

本文以人体工程学的理论为指导，通过分析使用电脑和阅读与书写这二类坐姿工作中人们的操作姿势和坐姿，指出&学生职业病&、&白领职业病&等健康隐患必然会发生的一个关键原因，特别是针对目前的办公椅设计上的这种不足称之由&结构性缺陷&。座椅会阻碍身体活动，而活动对于身体健康和大脑的思维能力而言至关重要。

Analysing natural beauty feature of posture at another angle of health preserving, one of static posture is San Yuan Zhuang; is embodies a stable and straight tree, people obtained a truth from the long life of trees, they realized that people who want to prolong their life should like trees to make a deep-rooted and standing like an old pine.

从养生的另一个角度看，静止类体势的自然美的特征。一种是体现自然物树的稳固、挺拔，如三元桩等。人们从树的长寿中悟到，人要延年益寿，就要象树一样根深蒂固，体势站立如松，坚固挺拔，使人整体体现出巍然屹立的自然物的美的特征。

It is not only Boulter this spirited name, bolt also has "the arrow and the lightning "in English the meaning, perhaps is precisely so, in the athletic field we saw such one was not the coincidence: Before the competition starts, when introduces Boulter, he has made the archery movement; After the gunshot, he just likes arrow to the string, the diving posture, the lightning pushes to the front; In the final ten meters place, he decelerates unexpectedly, and turns head the full moon posture, pats own chest to celebrate the victory ahead of time.

它不仅是博尔特这个神气的名字，bolt在英语中还有"箭和闪电"的意思，也许正是如此，赛场上我们看到的这样一幕就不是巧合了吧：比赛开始前，在介绍到博尔特时，他做了个射箭的动作；枪响之后，他犹如离弦之箭，飞身而出，闪电般地一马当先；在最后十米处，他竟然减速，并以回头望月的姿势，拍着自己的胸口提前庆祝胜利。

ABSTRACT Three-axis flying posture simulator is a set of precise and sophisticated equipment with important significance of economy and national defence. TFPS is a kind of powerful instrument used to reproduce the flying posture of flying weapons in laboratory. TFPS, together with equipment producing infrared target, simulates the attacked target and flying missile, which can really simulate the various flying postures in space and dynamic characteristics. Thus, the performances of sensors, control system and actuator and so on can be tested and evaluated, which provides various reference bases for developing, improving and redesigning flying weapons.

三轴飞行姿态仿真转台是具有重大经济价值和国防战略意义的高精尖试验设备，它是在实验室条件下复现飞行器或导弹在空中飞行姿态的有力工具，它和红外目标发生装置组合在一起模拟袭击目标和飞行导弹，可以真实地模拟出导弹等飞行器在空间的各种姿态和动力学特性，从而对其传感器件、控制系统和执行机构等硬件设备的性能加以测试和评价，为飞行器的研制、改进和再设计提供各种参考依据。

TheAdvancestoIP Multimedia Subsystem architecture, built on the 3rd Generation Partnership Project 2 (3GPP2)'s Multimedia Domain, supports both IMS/MMD and non-Session Initiation Protocol services. In terms of network operation, A-IMS as extensions to IMS/MMD enhances the IMS/MMD network security with the addition of Security Operation Center, posture agent, etc. Some parts of the A-IMS framework are still under development sUCh as terminal support for the posture agent, security information exchange, and security policy definition.

改进的IP多媒体子系统基于3GPP2的多媒体域架构，包含了所有IP多媒体子系统/多媒体域业务功能，并增加了对非会话发起协议应用的支持；从网络运营的角度，针对IMS/MMD网络安全提出了一些扩展和补充，如增加了安全操作中心和姿态代理等，使IMS/MMD网络的安全性得到了较大改进。A-IMS仍处于框架性描述阶段，还有很多细节尚不明确，如终端对姿态代理的支持能力、安全信息交换的内容、安全策略的具体定义等，有待于进一步研究。

The close loop equation is used for the positional posture analysis of the output piece of space 3-RPS parallel mechanism and the forward displacement of the mechanism is educed to acquire the positional posture of output piece.

应用闭合回路方程法对空间3-RPS并联机构的输出件的位姿进行分析，推导出该机构的运动学正解，获得了输出件的位姿，给出该机构位姿分析的数值仿真实例。

This paper stated the application of parallel link mechanism in modern machine tools,set up the error analysis as to parallel link mechanism in the virtucal-axis machine tool,derived the double triangular error equations of parallel link mechanicsm in its horizontal posture,analyzed the linearity and non-singularity of the error equations,thus giving the normal splution to the horizontal posture error.

该文对并联机构在现代机床上的应用作了论述，建立了虚拟轴机床并联机构的一种误差分析方法，应用坐标变换原理导出了双三角并联机构水平姿态时的误差方程组；分析了误差方程组的线性和非奇异性，给出了水平姿态时的位姿误差正解；对工作空间中心线的误差分布规律进行了仿真，绘制了其误差分布曲线。

In this chapter, three kinds of target recognition methods are performed, which are:①Target recognition method based on the description of polarization parameter plane. The echo polarization states of target are projected onto the polarization state plane described by the ellipticity ε and the tilt angle τ of the polarization ellipse, the change of parameter following ferquency becomes the chart. According to the changing trait of the chart, the multidimensional polarization feature space of target has been contructed. Furthermore, a series of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.②Target recognition method based on the description of Poincare polarization sphere. The echo polarization states of target expressed by Stokes vector are projected onto the Poincare polarization sphere. The conception of polarization ferquency stability, which is used in describing the dynamic distribution characteristics of the target echo polarization states on Poincare polarization sphere, has been defined. A group of polarization feature parameters used in designing the structure of target recognition device are extracted, and they are insensible to the posture of target.③Target recognition method based on the description of frequency sensitivity. In accordance with the conception of the polarization state distance defined on Poincare polarization sphere, the frequency sensibility of the physical structure property of target has been investigated, the frequency distribution feature curves in PSD domain are obtained, and targets'features are extracted by means of the curve-fitting method with Least Square Criterion.

这章具体研究了基于三种极化散射特性描述的相应的目标识别方法：①基于极化参数平面描述的目标识别方法，将目标回波极化状态投影到以极化椭圆参数，即椭圆率角ε和倾角τ表征的极化状态平面上，参数随观测频率的变化就形成了图，根据图的变化特点构造了目标的多维极化特征空间，并提取了不敏感目标姿态变化的极化特征参数组来设计目标的识别器结构；②基于Poincare极化球面描述的目标识别方法，采用Stokes矢量表征目标回波的极化状态，并将其投影到描述极化状态的Poincare极化球面上，定义了极化频率稳定度的概念用以刻画目标回波极化状态在Poincare极化球面上的动态分布信息，提取了准方位不变性的目标极化特征，最后设计了目标的识别器结构；③基于频率敏感性描述的目标识别方法，通过在Poincare极化球面上所定义的极化状态距离的概念，研究的是复杂目标物理结构特性对探测信号频率的敏感程度问题，获得了在极化状态距离下的频率分布特性曲线，采用最小二乘估计曲线拟合方法，它既用于极化特征的降维，同时又直接将拟合参数作为目标的分类特征。

The French are not suggesting a new EU treaty, but they have plenty of other wheezes.

法国人并不是在建议签署一个新的欧盟条约，但他们有许多其他的阴谋。

This letter was written by my brother.

这封信是我弟弟写的。