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stratosphere,从“同温层”到“平流层”——科技术语翻译杂议(七) 被引量:1
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作者 杨枕旦 《外语教学与研究》 CSSCI 北大核心 2000年第6期461-461,共1页
关键词 “stratosphere” “同温层” “平流层” 科技术语 翻译艺术
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Structural Performance Evaluation Procedure for Large Flexible Airship of HALE Stratospheric Platform Conception 被引量:8
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作者 陈务军 肖微微 +3 位作者 Bernd Krplin Andreas KunzeInst.of Static and Dynamic for Aerospace Structures Univ.of Stuttgart Germany 《Journal of Shanghai Jiaotong university(Science)》 EI 2007年第2期293-300,共8页
Basic loads applied on the airship envelope were analyzed.The resultant forces,the static bending moment and the dynamic bending moment were formulated.Based on classic linear elastic membrane theory,the procedures to... Basic loads applied on the airship envelope were analyzed.The resultant forces,the static bending moment and the dynamic bending moment were formulated.Based on classic linear elastic membrane theory,the procedures to calculate the minimum pressure were proposed for sufficient rigidity evaluation.The limit load capacity was further investigated,and the related formula were developed.Finally,the stress and internal forces analysis was carried out for cylindrical and non-cylindrical approximations of envelope hull of airship.The present research is very valuable to the overall preliminary design of airship and further research. 展开更多
关键词 AIRSHIP stratospheric platform minimum pressure structural performance
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Distribution and Variation of Carbon Monoxide in the Tropical Troposphere and Lower Stratosphere
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作者 LI Qian SHI Hua-Feng +2 位作者 SHAO Ai-Mei BIAN Jian-Chun Lü Da-Ren 《Atmospheric and Oceanic Science Letters》 CSCD 2014年第3期218-223,共6页
The authors examine the distribution and varia- tion of carbon monoxide (CO) in the tropics from the sur- face to the lower stratosphere. By analyzing space-borne microwave limb sounder (MLS) measurements, measure... The authors examine the distribution and varia- tion of carbon monoxide (CO) in the tropics from the sur- face to the lower stratosphere. By analyzing space-borne microwave limb sounder (MLS) measurements, measure- ments of pollution in the troposphere (MOPITT) and mod- em-era retrospective analysis for research and applications (MERRA) meteorological products, and atmospheric chemistry and climate model intercomparison project (ACCMIP) surface emission inventories, the influences of atmospheric dynamics and surface emissions are investi- gated. The results show that there are four centers of highly concentrated CO mixing ratio over tropical areas in differ- ent seasons: two in the Northern Hemisphere and another two in the Southern Hemisphere. All of these centers cor- respond to local deep convective systems and mon- soons/anticyclones. The authors suggest that both deep convections and anticyclones affect CO in the tropical tro- posphere and lower stratosphere--the former helping to transport CO from the lower to the middle troposphere (or even higher), and the dynamical uplift and isolation effects of the latter helping to build up highly concentrated CO in the upper troposphere and lower stratosphere (UTLS). Similarly, there are two annual surface emission peaks in- duced by biomass burning emissions: one from the North- ern Hemisphere and the other from the Southern Hemi- sphere. Both contribute to the highly concentrated CO mixing ratio and control the seasonal variabilities of CO in the UTLS, combining the effects of deep convections and monsoons. Results also show a relatively steady emission rate from anthropogenic sources, with a small increase mainly coming from Southeast Asia and lndia. These emis- sions can be transported to the UTLS over Tibet by the joint effort of surface horizontal winds, deep convections, and the Asian summer monsoon system. 展开更多
关键词 CARBON monoxidetropicstropospherelower stratospheresurface EMISSIONS
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INDEX OF DIRECTION CHANGE OF ZONALLY AVERAGED WIND AND CHANGE OF SEASON
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作者 朱敏 徐建霞 张铭 《Journal of Tropical Meteorology》 SCIE 2011年第2期128-135,共8页
In this paper, a Wind Direction Change Index (WI), which can describe four-dimensional spatiotemporal changes of the atmospheric circulation objectively and quantitatively, is defined to study its evolution and season... In this paper, a Wind Direction Change Index (WI), which can describe four-dimensional spatiotemporal changes of the atmospheric circulation objectively and quantitatively, is defined to study its evolution and seasonal variation. The first four modes can be obtained by EOF expansion of the zonally averaged WI. The first mode reveals the basic spatial distribution of the annually averaged WI. The second mode reflects the quasi-harmonic parts of the WI deviations. Tropical, subtropical and extratropical monsoon areas can be clearly reflected by this mode. The third mode reflects the non-harmonic parts of the WI deviations. It shows the so-called February reverse in stratospheric atmosphere as well as the asymmetric seasonal changes from spring to fall and from fall to spring due to both the land-sea distribution contrast between the Northern and Southern Hemispheres and the nonlinear effect of atmospheric and ocean fluids. The fourth mode reveals the northward advancing of the global reversed wind fields from spring to summer and their southward withdrawal from summer to autumn. 展开更多
关键词 Wind Direction Change Index (WI) Empirical Orthogonal Function (EOF) four-dimensional space-time changes February stratospheric reverse
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飞行史上十架最有影响的飞机
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《国防科技》 2003年第12期74-75,共2页
[飞行者] 1903年12月17日,当莱特兄弟完成了人类第一次有动力、持续的、可操纵的飞行时,他们所驾驶的“飞行者”号飞机就成了所有飞机的鼻祖。
关键词 飞行史 “兴登堡”飞艇 “喷火”战斗机 “眼镜蛇”武装直升机 B-52“同温层堡垒”轰炸机
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倍受美军常爱的最丑B-52
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作者 范柏 《军事展望》 2002年第1期32-36,共5页
一阵阵冰雹似的重磅炸弹密密麻麻地掉在喀布尔、坎大哈等阿富汗多个地域,爆发出一团团烈火,翻滚着一股股浓烟。随着烈火、烟团往上一看,啊!这是美军B-52轰炸机又在逞能,在对塔利班阵地进行地毯式轰炸。
关键词 B-52型轰炸机 “同温层堡垒” 智能系统 神经系统 战斗性能 打击技术
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话说空中“牛魔王”B—52
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作者 乐俊淮 《航天》 2000年第8期14-16,共3页
形象而贴切的绰号——“牛魔王” 话说二战结束之后,美国人发现,这世界真是变了;过去繁花似锦的欧洲如今是一片废墟,昨日协同作战的盟友苏联转眼成了不共戴天的死敌。1948年8月29日,苏联第一颗原子弹爆炸成功,吓得美国人心惊肉跳。尽管... 形象而贴切的绰号——“牛魔王” 话说二战结束之后,美国人发现,这世界真是变了;过去繁花似锦的欧洲如今是一片废墟,昨日协同作战的盟友苏联转眼成了不共戴天的死敌。1948年8月29日,苏联第一颗原子弹爆炸成功,吓得美国人心惊肉跳。尽管美国自己早就拥有了这种威力巨大的武器,并于1945年8月6日和9日。 展开更多
关键词 美国 B-52 “同温层保垒” 重型轰炸机
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