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A wind- and motor-powered land vehicle with a fore-and-aft longitudinal axis comprising a body supported by wheels, at least one of said wheels fixed to rotate in a plane parallel to the fore-and-aft axis of said vehicle, an airfoil system comprised of two vertically extending airfoils rigidly mounted on said body in an arrangement having bilateral symmetry about a vertical plane through said fore-and-aft axis, said airfoil system providing a forward propelling force of said vehicle when the airfoil system is subjected to certain cross wind conditions, and self-contained motor propulsion means on said vehicle for providing acceleration from a stationary position and for propelling the vehicle either independently or in combination with propelling forces generated by wind action on said airfoil system, each airfoil having a plurality of airfoil sections telescopically fitted together, the lower airfoil section being rigidly mounted in fixed relationship to said body, said airfoil system including a retracting mechanism for lowering upper airfoil sections of said airfoil system when desired and for subsequently extending said airfoil system, said retracting mechanism including a plurality of linkages interconnecting said sections and an actuator means operatively connected between said body and to said linkages for lowering and extending each airfoil, and an intermediate airfoil extending between the upper sections of each of said airfoils so as to provide an inverted U-shaped airfoil.

风力和电动机驱动的陆地车辆与前列和尾部长轴组成的一个机构的支持，车轮，至少有一说，车轮固定在一个旋转平面平行的前列和前后轴的说，车辆，翼型系统组成的两个垂直扩展翼型硬性安装在说，机构在安排后，双边对称约一垂直面说，通过国内外和前后轴，表示翼型系统提供了一个向前推进的力量说，车辆时，翼型系统是受到某些横风条件下，和自我载电机推进的手段就表示，车辆提供加速从一个固定的立场和为推进车辆单独或结合，与推进力量所产生的风的行动表示翼型系统，每个机翼有一个多元化翼型第telescopically装在一起，较低的翼型节被硬性安装在固定的关系，说身体，说翼型系统包括一个撤消的机制，降低上翼型章节说，翼型系统时，理想的和其后再将说，翼型制度，说收回机制包括多元化的联系互连说，部分和一个致动器的手段手术之间的连接说，身体和说，联系降低，并延长每翼型，及一个中间翼型延长之间的路段上的每说翼型，以便提供一个倒U -形翼型。

On the basis of other scholoar's research, the author makes systematic、complete and throughgoing research on characteristics and predication of strata movement for the first time in this paper. The creative work makes up land space in domestic and abroad. The author's major work are as follows: 1 According Haken's synergetics view, the author researches the non—linear self —organized evolving process of refeeding, hybriding and cooperating features of internal varables of the roof movement for the first time, and makes an important conclusion that it will appear chaos at the critical state.

本文在前人研究的基础之上，初步用非线动力学的观点，对岩层运动的动力学特征及预测方法进行了较全面、系统的研究，主要工作如下： 1 根据Haken的协同论观点，初步研究了顶板运动过程中系统内部变量的反馈、耦合、协作的非线性自组织演化过程，得到了顶板运动在突变的临界状态呈现出弱混沌性，其力学行为难以准确预测的结论，较好地解释了岩层突变灾害预测困难的内在原因，并为选择合理的预报时刻，提供了依据。

The rapid expansion of urban area seized the valuable tillable land in many circumstances made people widely recognized that development should not come at the expense of agriculture.

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。政府更加重视这个问题，越来越多的不必要的工程被终止。

This photo is taken at the top of the 83-meter-high Rock Fort—the only outcrop in the otherwise flat land of the city of Trichy in Tamil Nadu, India.

这张照片是采取在83米的高岩石堡垒，在城市的其他单位的特里奇在泰米尔纳德邦，印度的土地只露头的顶部。

This photo is taken at the top of the 83-meter-high Rock Fort—the only outcrop in the otherwise flat land of the city of Trichy in Tamil Nadu, India.

这张照片是在Trichy城83米高的石头堡垒顶部拍摄的，这是该片区域唯一一块突出的高地。

This photo is taken at the top of the 83-meter-high Rock Fort—the only outcrop in the otherwise flat land of the city of Trichy in Tamil Nadu, India.

这张照片是采取顶部的83米高的岩石堡垒唯一露出否则在平地的城市Trichy在印度泰米尔纳德邦。

This photo is taken at the top of the 83-meter-high Rock Fort—the only outcrop in the otherwise flat land of the city of Trichy in Tamil Nadu, India.

这张照片是采取顶部的83米高的岩石堡唯一露头的其他单位土地的城市Trichy在印度泰米尔纳德邦。

This photo is taken at the top of the 83-meter-high Rock Fort—the only outcrop in the otherwise flat land of the city of Trichy in Tamil Nadu, India.

这照片摄取在83米高的岩石堡垒的顶上唯一露头在不同的城市平坦的陆地在印度泰米尔纳德邦的Trichy。

This photo is taken at the top of the 83-meter-high Rock Fort—the only outcrop in the otherwise flat land of the city of Trichy in Tamil Nadu, India.

这幅图片摄取在高83米的岩石堡垒顶上――唯一露头在不同的平坦的陆地的Trichy城市位于印度泰米尔德邦。

This photo is taken at the top of the 83-meter-high Rock Fort—the only outcrop in the otherwise flat land of the city of Trichy in Tamil Nadu, India.

这张照片是在83米高的岩堡顶部拍摄的——这里是印度泰米尔纳德邦特里奇城的唯一高地。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。