清晰地

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。

He has no problem tonguing quickly (he can tongue around quarter= 150!), and he can tongue heavily and percussively. But when he tries to tongue lightly the result is an unclear "tha" type sound.

他可以吐得很快，几乎达到四分音符150拍每分，他也可以吐得很有力度，但当他尝试着轻轻地吐，结果就是一个不清晰的"tha"一样的声音。

These dyke swarms are undeformed and unmetamophosed with beautifull flow structure to show the characteristics of Precambrian magma activity, which is rare in the world.

这些岩墙群未变形和未变质，保存了清晰完好的流动构造，完整地反映了前寒武纪岩浆活动的特征和流动构造，这在世界上是罕见的。

The moth's unmistakable colorings is aposematic, meaning that they are actually "advertising" the bug's unpalatability to potential predators.

图片中这只豹蛾翅膀上的清晰图案是一种警戒色，形象地说就是在做广告，警告潜在捕食者"我们并不好吃"。

Dragged out by this dense rain shade, a scene of past affection, some smile-faces, even some unrooted scenarios in your memory, suddenly come into the light of this autumn from faintness to clearness.

一场旧情，几张笑脸，一些在你的记忆中远到不见踪影的情节，总是被绵密的雨帘牵扯，恍恍地从辰光里走来，从模糊走向清晰。

Take shape; take formGradually, however, vague outlines began to take form and to fix themselves in his meditation, and he was able to catch a glimpse with precision of the reality,--not the whole situation, but some of the details.

渐渐地，这时一些模糊的线索在他的沉思中开始形成固定下来了，他还不能看清整个问题的全貌，但已能望见一些局部的情况，并且，如同观察实际事物似的，相当清晰了。

Compared to state-of-the-art methods based on Kohonen's adaptive-subspace self-organizing map, our method avoids confusion of data in the manifold representation. Each neuron in the network approximately learns the mean vector and principal subspace of the data in its local region. The data representation is therefore more discernable.

与现有的基于Kohonen的自适应子空间自组织映射网络(Adaptive-subspace self-organizing map， ASSOM)方法相比较，本文方法有效地克服了流形表达中出现的数据混淆现象，网络中各神经元渐近学习各自区域内样本数据的平均向量和主元子空间，数据表达更加清晰可辨。

When we sit on the sofa I found the vestige of life on his face clearly and profoundly," How are you?"

当我们在沙发上坐定，我发现岁月的痕迹清晰而深刻地刻在他的脸上。

Use the method of multi-media, S-VHS type video camera, BVE-800compiler machine and BVU-850 P video cassette recorder, all equipments are new and developing. TV program about the periodie table of elements is produced. The elements in periodic table, such as simple substance mineral exist in nature, with its main physical and chemical characteres, find dxpress in clear drawing and vividly demonstrate experiment.

运用多媒体电化教学手段，借助S－VHS型摄像机、BVE－800编辑机及带编辑功能的BVU－850P录像机等先进的设备，拍摄了实物元素周期表录像片，将元素周期表中元素的单质、存在于自然界的矿物以及它们的主要物理、化学性质，通过清晰的画面、生动的演示实验形象逼真地表现出来。

The music culture states of four places get the clear geographical wadding here.

四地的音乐文化状况在此得到清晰地理絮。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。