航空力学的

The science of the motion and equilibrium of air and other gases, comprising aerodynamics and aerostatics.

航空力学空气和其他气体的运动与静止的科学，由空气动力学与空气静力学组成

Aerospace and biomechanical engineers have long been aware of shape-memory alloys, but these materials have come to the attention of civil engineers only recently.

航空航天和生物力学的工程师们早就知道了形状记忆合金，但是土木工程师们只是在最近才关注这种材料。

The results not only provided ba- sic data for research of ejection escape in aviation and spaceflight,but can be applied to ergon...

此结果不但为航天航空弹射救生的研究提供了基础数据，也可以在人体工程学和运动生物力学等方面应用。

Th e motion performance of two areospace pressure suit were studied. Human mechani cs and its physiological basis was applied in the design of one suit only.

方法对比在两种航空航天压力服设计中，采用或不运用人体力学与其生理基础进行设计的活动效能。

Damage mechanics is a new branch of solid mechanics that has come into being during the past two decades. The theory deals with solid-state physics, strength of materials and continue mechanics as a whole. Making up for the deficiency of microexamination and fracture mechanics, it is getting more and more useful for the calculation of life expectancy of materials, thus facing a bright future as far as its infinite use are concerned.

损伤力学是近二十年才开始形成和发展的一门新的固体力学分支，它是将固体物理学、材料强度理论和连续介质力学统一起来进行研究的理论，弥补了微观研究和断裂力学研究的不足，越来越多地应用于航天航空、高温高压热力设备寿命评估和混凝土、复合材料、高分子材料质量评估计算，是一门有着无限广阔用途的新学科。

In this dissertation, periodic impact motions in vibro-impact systems are studied, and the existence and stability of superharmonic periodic impact motions are obtained. The critical bifurcation parameter intervals of superharmonic periodic impact motions are deduced, and numerical simulations are used to verify the results.

中文题名碰振或约束系统的全局分析及稳定性研究副题名外文题名 Studies on global analysis and stability in vibro-impact or constraint systems 论文作者张彦梅导师陆启韶教授学科专业一般力学与力学基础研究领域\研究方向学位级别博士学位授予单位北京航空航天大学学位授予日期2002 论文页码总数95页关键词碰振系统转子系统多体系统碰撞振动馆藏号BSLW /2003 /O322 /1 本论文讨论了碰撞振动系统的周期碰撞运动，得到了超谐周期碰撞运动的存在性和稳定性，推导出亚谐周期运动的临界分岔参数区间，并利用数值模拟进行验证。

The bismaleimide resins are widespreadly used in the areas of aviation, airspace, mechanical and electronic industries because of their features such as thermal stability, insulativity, radioresistance, fire retardatory property, weather resisting property, good mechanical property and dimensional stability.

双马来酰亚胺树脂以其优异的耐热性、电绝缘性、耐辐射、阻燃性、耐侯性，良好的力学性能和尺寸稳定性，成型工艺类似于环氧树脂等特点，被广泛应用于航空、航天、机械、电子等工业领域中。

Received with open arms inhis homeland, Tsien resumed his research, founded the Institute of Mechanics,and, as one of the world's leading authorities in aeronautics, went on tobecome the "father" of China's missile program, a trusted member of thegovernment and Party's inner circle, and the nation's "most honored scientist."

他的祖国对他张开双臂，钱恢复了他的研究，创立了力学研究所，作为世界航空学的领袖权威之一，逐渐成为中国的导弹计划(只有政府信任的成员和党的核心圈子才能参加)&之父&，和中国&最受尊敬的科学家&。

In order to accomplish these missions the Coast Guard has 38,000 active-duty men and women, 8,000 Reservists, and 35,000 Auxiliary personnel who serve in a variety of job fields ranging from operation specialists and small-boat operators and maintenance specialists to electronic technicians and aviation mechanics.

为了完成这些任务的海岸警卫队38，000现役男子和妇女， 8000名预备役和辅助人员35，000谁担任各种工作领域，包括经营专家和小型船只运营和维护的专家和航空电子技术力学。

One of the professors was a Romanian who is known for his research in aeronautical engineering.

其中一名教授是罗马尼亚人，他在航空工程学方面知名，另一名教授被视为是美国生化力学研究领域前5名的人物。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。