原理

With the development of sports biomechanics, technique applied biomechanical theory to analyze and optimize agonistic motions of sports, as a new interdisciplinary field, have been attached more and more attentions recently.

随着新兴的边缘学科——运动生物力学的迅猛发展，应用生物力学原理诊断运动员的动作技术、优化运动技术作为运动生物力学的主要应用研究课题之一，正在受到越来越多的关注，应用在各项体育领域的运动分析指导系统作为教学与训练的指导工具也备受关注。

Firstly, according to the research of the present development situation of domestic and foreign basketball wheelchair, and utilizing the Man-Machine Engineering principle, this paper designs a medium-sized basketball wheelchair and a agonistic basketball wheelchair respectively aim at common and athlete.

本文首先运用人机工程学原理，根据对国内外篮球轮椅发展现状的研究，针对普通人群和专业轮椅篮球运动员分别设计一款大众型和竞赛型篮球轮椅，并对竞赛型篮球轮椅进行了部分的改进设计，以提高其整体性能。

The 1002 chalaza type shoe that improves a composition improves ★ one kind chalaza type shoe of the structure, basically include shoe body and bootlace, still include to be enclothed, should enclothe a principle that uses nylon agraffe to Fu covers or lap abode narrates bootlace soft the intermediate position of become bowknot, the knot that makes bootlace is fastened is in relatively stable condition, reduced what what the bowknot in athletic process suffers to shake reach pulling force.

1002改进结构的系带式鞋子一种改进结构的系带式鞋，主要包括鞋体和鞋带，还包括一覆盖件，该覆盖件利用尼龙搭扣的原理覆盖住或者包裹住所述鞋带柔成的蝴蝶结的中间位置，使鞋带系成的结处于相对稳定的状态，减少了运动过程中蝴蝶结所受的震动及拉力。

The research and application of several methods for agricultural yield forecast in China were summarized and assessed,including meteorology,agrobiology,econometrics and dynamic simulation for crop growth,etc.

对气象、农业生物、经济计量、作物生长动力模拟这几种农业产量预报技术方法在国内的研究和应用情况进行分析、总结和评价，论述各种方法的基本原理、适用情况和改进途径，提出综合性预报方法思路。

According to the guidance of economic fundamental principles, this paper utilizes the systems science, sight-ecology, agrology and many other theories and methods related with water conservancy, adopts the methods of representative research and emphasizes the combination qualitative analysis and quantitative analysis.

在研究中以经济学基本原理为指导，同时借鉴系统科学、景观生态学、土壤学和水利科学相关理论和方法，采取典型调查的方法，并注重了定性分析和定量分析的有机结合。

Based on this and considering: land use has contacts with soil nutrient; the development of ecology and agrology has already formed the inter-dynamic relation in the last few years, the author sprouted a new idea that the study on land use is carried out in another way. That is to say, land use patterns are designed combining land use modes, soil nutrient with other respects and according as landscape ecology in order to land sustainable use.

在此基础之上，并鉴于以下两点：土地利用与土壤养分有着密切的联系；近些年来，生态学和土壤学的发展已经形成了互动的关系，笔者提出一条新的思路：换个角度入手来合理配置土地利用，即将土地利用方式、土壤养分和其它方面结合起来，依据景观生态学原理，通过土地生态设计来寻求土地利用优化模式，保证土地利用的可持续性。

The mainly working elements are: crankshaft and clamp are built on the imovable table-board. The headstock has aiguille and it follows dragging board to come true the boring athletics.The landscape orientation of dragging board, the up and down sport of shaking-arm and the running of dragging board turn up the modulating of working station.

其大体工作原理如下：曲轴和夹具安装在固定不动的平台上，装有钻头的主轴箱随进给拖板实现钻削进给运动，工作位置的调整是通过大拖板横向运动、摇臂的上下运动、摇臂的转动来实现的。

The working principle of this buoyancy engine is to use the valves to control the inflow and outflow of the compressed air in the elastic bladder inside the water chamber.

在机体首部设置「气压式」浮力引擎，其原理为利用一灌有高压气体的钢瓶。

The development of MEMS optical switches including electromagnetism driven mobile micro-switch, electrostatic driven optical switch, optical switch matrix of MEMS optical amplifying and spray-ink air bladder MEMS optical swith, wavelength selective switch, both at home and aboard is reviewed, and the structures, performances and fabrications of these components are analyzed.

介绍了目前国内外光纤通信系统中所涉及的电磁驱动移动式MEMS光开关、静电驱动式光开关、基于MEMS光大器的可扩展型光开关矩阵、喷墨气泡MEMS光开关、开环式1×N波长选择MEMS光开关。对这些器件的结构原理，制造方法及其性能指标作了分析。

It only consumes the electricity of the air blower and circulating water pump,having advantages of simple structure and saving energy.

湿膜加湿器是利用直接蒸发加湿的工作原理，对空气进行加湿，只消耗风机和循环水泵的电耗，具有结构简单和节省能源的优点。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。