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It will expose the design problem of maintainability of civil airplane to the early stage of design. This paper discusses the composing of the virtual maintenance environment, builds non-immersion virtual maintenance environment of undercarriage, and establishes a part library management system. The characteristic of maintainability models and maintainability analysis based on virtual technique is researched to give the maintainability frame model of civil airplane virtual maintainability analysis. All levels of maintenance time model and maintenance man-hour model are established. Analog-Huffman code is proposed to optimize space partition method in traditional collision detection arithmetic."Maintenance therblig"is brought into the broken down of maintenance tasks, and the new maintenance tasks broken down method is proposed. The demands of human measure, position, and equipment layout in human engineering are discussed, and the verification methods of human measure, position and equipment layout in virtual maintenance are given. Basic principle and verification procedure of maintainability virtual verification is developed primarily, and the reachablity, the visibility, and posture-comfortability are verified.

本文论述了虚拟维修环境的组成，构建了某型飞机主起落架非沉浸式虚拟维修环境，建立了维修对象的零件库管理系统；研究了基于虚拟技术的维修性模型特点及维修性分析流程，给出了基于虚拟技术的民机维修性分析框架模型，并结合传统维修性模型，建立了各级维修时间模型和维修工时模型；提出类HUFFMAN编码，结合人因工程的要求，优化了传统碰撞检测算法中的空间分割法，使之适用于柔体；在维修性分解中引入"维修动素"，给出了与CATIA、DELMIA等应用软件结合紧密的维修任务分解方法；论述了人因工程中对人体尺寸、姿势、设备布局的要求，给出了虚拟维修中人体尺寸、姿势分析、民机内设备布局的验证方法；初步制订了维修性虚拟验证的基本原则和验证程序，并结合具体实例对可达性、可视性、干涉性以及人体姿态舒适性进行了验证，较清晰、真实地反映了维修人员的维修状态。

Bringing his palm down on the book with an impatient thwack, he left his seat and paced through into the rear part of the house, where he lay down on a mahogany couch and closed his eyes with a sigh

冯云卿忽然烦躁起来，右手将账簿一拍，就站起来，踱到厢房后半间朝外摆着的红木炕榻上躺了下去，闭了眼睛，叹一口气。

To tie down Tom doesn't want to be tied down by human relationship.

汤姆不想受人际关系的约束。

Just like Friday I desperately struggled to seat my axe in the crux tin-opener 胸带?. I screamed to Joe to expect a fall and released my left axe, cutting loose onto one arm. The axe slid and jerked a centimeter. My heart missed a beat and the jolt nearly made me fall, my hand sliding down the upside-down axe to the head and rolling onto three fingers.

后来爬到 crux时，在爬到后来的他用2.5小时领攀了那段路线，我大声的呼叫 Joe，希望他往下降一点，帮我把挂在左面的冰斧取出来，试图两手轮流砍冰前进，但我好像没有把冰斧固定住，突然滑动了大约一厘米，我一紧张，斧子从手里滑了下来，差点碰到我的头，刹那间我用三个手指头再次抓住它，就在这一瞬间，我整个身体差点坠落下去，心也一下子提到了嗓子眼，砰砰直跳。

One particularly colourful one comes from Eric Rongley, an American entrepreneur, who recalls how, in the process of acquiring a licence for his business, he was forced to steal his computers from his own office after it had been closed by the police through the tittle-tattle of a rival, and found himself racing down the street, computer in hand, with his trousers falling down and a security guard clinging to his arm, while he screamed "this is mine!"

其中有一条来自美国企业家Eric Rongley的经历很有"个人特色"。他回忆道，为了能拿到商业执照，他不得不从因为闲聊"造反"而被警方查封的自己的办公室里"偷"出自己的电脑，结果扯着滑落的裤子抱着电脑在大街上一路狂奔，被保安逮着了扭着胳膊，还操着糟糕的普通话喊"这电脑是我的！"

In the top-right corner of the green border, you'll see an Add New Item drop-down menu and a State drop-down menu.

在"绿色边界"的右上方有一个Add New Item下拉菜单以及一个State下拉菜单。

As she walked up and down she kept jerking out such little phrases as: It will calm the fellow down if he has to wait a quarter of an hour. Besides, if he thinks he's calling on a tottie the drawing room will stun him!

她一边踱步，一边断断续续地说道：让这小伙子等上一刻钟后，他就自然平静下来了……另外，如果他以为来到一个*女家里，这间客厅就会使他大开眼界……对了，对了，好好看一看吧，我的好好先生。

After 8 hours "up and down", we finally touch down in Kunming City, Yunnan.

经过八小时的"起起落落"，我们终于到了云南的昆明。

When they put 10 men behind the ball it is tough to break them down but it is tough to break down any side when they do that.

而当他们10个人都退守后场时，我们发觉无论是中路还是两边都很难渗透进去。

It was a picture of a young woman in a long white gown, standing on the rail of a bridge all ready to jump off, with her hair all down her back, and looking up to the moon, with the tears running down her face, and she had two arms folded across her breast, and two arms stretched out in front, and two more reaching up towards the moon -- and the idea was to see which pair would look best, and then scratch out all the other arms; but, as I was saying, she died before she got her mind made up, and now they kept this picture over the head of the bed in her room, and every time her birthday come they hung flowers on it.

她双臂抱在胸前，另有双臂朝前张开，又另有双臂伸向明月――原意是想要看一看，哪两个双臂画得更好些，定了以后，便把其余的给抹掉。不幸的是，正如我所说的，在她打定主意以前，突然逝世。家人如今把这幅画挂在她卧室的床头上。每到她的生日，他们在上面放了花。平时是用一块小小的幔帐给遮了起来。画上的年轻姑娘，脸又美又甜，只是胳膊太多了，我总觉得看起来有点儿象蜘蛛似的。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。