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man-system
相关语句
  人地系统
     A Theoretical and Practical Study on Man-System and Regional Sustainable Development
     人地系统与区域持续发展的理论和实践研究
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  相似匹配句对
     THE INVISIBLE MAN
     隐身人
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     The man's pride
     男人的骄傲——剃须有感
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     Spider -Man
     蜘蛛侠(英文)
短句来源
     The By-product of Man
     男性主导话语的产物——样板戏对女性自我的否定
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     system).
     系统)。
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Basic concept investigative content and methods,andexistent important problems on human aerodynamics are presentedhere for the first time,the effects of windblast on human body areexpounded,and the aerodynamic characteristics of different parts ofhuman body are analysized.This paper introduces the drag coefficientsof upper limb shank and head as functions of Maeh number and it isconsidered that the flail motion of extremity and head subjected towindblast against seat-man system is a serious threat and major...

Basic concept investigative content and methods,andexistent important problems on human aerodynamics are presentedhere for the first time,the effects of windblast on human body areexpounded,and the aerodynamic characteristics of different parts ofhuman body are analysized.This paper introduces the drag coefficientsof upper limb shank and head as functions of Maeh number and it isconsidered that the flail motion of extremity and head subjected towindblast against seat-man system is a serious threat and major obstr-uction for pilot safety ejection.In this paper windblast protectiveequipments presently studied at home and abroad are classified on the hasis of protective principle,and their protective capabilities are evaluated.Major achievements of relevant scientific research at home and abroad areintroduced,particulary the calculation of dynamic pressure on seat-mansystem are expounded in detail,and the semi-empirial expression of cor-rection coefficient of dynamic pressure on seat-man system is presented.The expression is not only applicable for calculating drag coefficients ofbig blunt body like seat-man system within arbitrary Mach number range,but also for other big blunt body as well.At last,some suggestions wereadvanced for future studies.

本文首次提出了人体空气动力学的基本概念、研究内容、方法和当前存在的主要问题。阐述了高速气流吹袭对人体造成的影响,分析了人体各部分的气动特性,给出了人体上肢、小腿及头颈部的阻力系数曲线,认为人体四肢和头颈部在高速气流吹袭下产生的相对于人椅系统甩打运动,将对人体的安全弹射造成严重威胁,是飞行员安全弹射的主要障碍。本文还对目前国内外所研究的高速气流防护装置按其防护原理进行了分类,并评价了他们的防护能力。本文介绍了国内外的主要研究成果,并对其中人椅系统的速压计算问题作了较为详细的阐述,介绍了作用在人椅系统上的速压修正的半经验公式。此公式不仅适用于计算像人椅系统那样的大钝体,而且也适用于计算其它大钝体在任意 M 数范围内的阻力系数。最后,文中对今后的研究工作提出了一些建议。

The previous studies on precipitation-socioeconomy relations were generally limited for different departments of socioeconomy individually. The article stresses the necessity to study it for the socioeconomy as a whole and makes an attempt to do so. The principles of water balance in the Nature-Man system were formulated in the preliminary form. Several indexes were proposed for identifying different states of water balance between supply and need in the system. The results were applied to some regions of North...

The previous studies on precipitation-socioeconomy relations were generally limited for different departments of socioeconomy individually. The article stresses the necessity to study it for the socioeconomy as a whole and makes an attempt to do so. The principles of water balance in the Nature-Man system were formulated in the preliminary form. Several indexes were proposed for identifying different states of water balance between supply and need in the system. The results were applied to some regions of North China, showing that the proposed principles .and methods are well available to these regions.

由于过去关于降水与社会经济关系的研究大都限于各个社会经济部门,本文强调必需研究二者的总体关系。初步提出了一个自然界-人类系统水分平衡的图式和研究这个系统内水分供需平衡盈亏状态的判别式。所得结果应用于华北地区,表明所提原理与方法大致能反映实际情况。

Abstract In the afticle the inevitable coming into being of the informational society,in which softscience would play a leading role in socioeconomical development,is tackled .The significanceof geoscience will be ever growing in the future society for its vitally important role in solvingthe urgent problems in the respect of environmental crisis and shortage of natural re-sources. Chinese ancient science has abundant information and examples valuable to enhancethe formation of soft science which gives the reasonable...

Abstract In the afticle the inevitable coming into being of the informational society,in which softscience would play a leading role in socioeconomical development,is tackled .The significanceof geoscience will be ever growing in the future society for its vitally important role in solvingthe urgent problems in the respect of environmental crisis and shortage of natural re-sources. Chinese ancient science has abundant information and examples valuable to enhancethe formation of soft science which gives the reasonable way to deal with the complicated Na-ture-Man System as a whole,On the mentioned bases,a foresight of geoscience is given in thearticle.

本文论述了中国古代科学思想对地学未来发展的影响,现代社会已进入信息社会,软科学对社会经济发展起着重要的指导作用。在未来社会中,地学对于解决环境危机和资源紧缺这一紧迫的问题日益显示其重要的作用。在中国古代社会的科学技术及其它活动中有着十分丰富的软科学内涵和许多发人深思的软科学范例。它们可提供解决作为一个整体的复杂的人一地关系问题的合理的方法和途径。

 
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