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彗星爆发
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  cometary outburst
     Whether a cometary outburst with a jet can cause observable short-term nongravitational effect is investigated.
     探讨伴有喷流的彗星爆发是否造成可观测的非引力效应。
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  相似匹配句对
     Whether a cometary outburst with a jet can cause observable short-term nongravitational effect is investigated.
     探讨伴有喷流的彗星爆发是否造成可观测的非引力效应。
短句来源
     CORONAL MASS EJECTIONS AND SOLAR RADIO BURSTS
     日冕物质抛射和射电爆发
短句来源
     INTERACTIONS BETWEEN COMETARY PLASMAS AND THE SOLAR WIND
     彗星和太阳风的相互作用
短句来源
     The Statistics of Comet Orbits
     彗星轨道的统计
短句来源
     Erupthon and control
     爆发与控制
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  cometary outburst
Based on these simulations, it seems most likely that the fragments split rather late in the cometary outburst.
      
One is the location at which the cometary outburst occurred.
      
The meteoroids released during the cometary outburst approach the Earth more closely than the fragments themselves but only slightly.
      
We did find that meteoroids ejected at 1000 m s-1 during the cometary outburst could intersect the Earth's orbit in 2006.
      


From Mar.25-Apr.3 of 1986 some observations of Halley's Comet in the near infrared region ware made at Yunnan Observatory.The instrument used in the observations was an infrared photometer-spectrophotometer with J,H,and K standard filters and a CVF 1.3-2.6 Urn,Δλ/λ=2%).From results in the J,H and K bands it is clear that all infrared magnitudes of Halley's Comet were going to be faint during the period of observed time.Combined with our previous,data in the observations of Halley's Comet by the photoelectric...

From Mar.25-Apr.3 of 1986 some observations of Halley's Comet in the near infrared region ware made at Yunnan Observatory.The instrument used in the observations was an infrared photometer-spectrophotometer with J,H,and K standard filters and a CVF 1.3-2.6 Urn,Δλ/λ=2%).From results in the J,H and K bands it is clear that all infrared magnitudes of Halley's Comet were going to be faint during the period of observed time.Combined with our previous,data in the observations of Halley's Comet by the photoelectric photometry,it could be considered that this was the result of an outburst in the Comet perhaps just before infrared observation time.From results of the CVF observation in the 1.3-2.6μm it is obvious that some emissions at 1.4,1.9 and beyond 2.6μm appeared during observations.It seems that the emissions at 1.4 and 1.9μm came from H2O and other possibly came from OH.

本文给出哈雷彗星在1986年3月25日至4月2日之间JHK波段测光和1.3—2.6微米分光观测结果。测光结果表明,3月22日彗星爆发在近红外波段也造成了明显的光变,但恢复正常光度的时间要滞后一些,且光变较之可见光波段要平缓.并指出在爆发期间,彗星除光变外尚有色变。分光观测到彗星在1.4、1.9微米的水发射线和位于2.6微米之外的可能的OH发射线。

Cometary accurate orbital motion is a complex and difficult problem. Its remarkable characteristic is the presence of the non-gravitational effect. In this paper, the progress of research concerned is reviewed. Firstly, discovery and explanation of the effect are summarized in brief. Then, standard non-gravitational acceleration models and their results are outlined. Finally, alternate non-gravitational models, some problems of short-term non-gravitational effect caused by cometary outburst and jet activity...

Cometary accurate orbital motion is a complex and difficult problem. Its remarkable characteristic is the presence of the non-gravitational effect. In this paper, the progress of research concerned is reviewed. Firstly, discovery and explanation of the effect are summarized in brief. Then, standard non-gravitational acceleration models and their results are outlined. Finally, alternate non-gravitational models, some problems of short-term non-gravitational effect caused by cometary outburst and jet activity and the future prospect of this kind of studies are discussed.

彗星的准确轨道运动的确定是个复杂而困难的问题,其显著特点是存在非引力效应。本文评述彗星的非引力效应研究进展,首先回顾这种效应的发现与解释,接着概述标准非引力加速度模型及其结果,最后简述其他非引力模型和讨论彗星爆发与喷流活动产生的短期非引力效应问题及展望。

Whether a cometary outburst with a jet can cause observable short-term nongravitational effect is investigated. For three outbursts of comet Halley on November 12 and 15 and December 12, 1985, astrometric data of the comet on November 11~17 and December 8~15, 1985, are analysed, and it is found that deviation of observed geocentric right ascension and declination from calculated ones by the ephemeris for the comet just after these outbursts, α0-c and δ 0-c, is obviously more than error (Fig. 1). Therefore,...

Whether a cometary outburst with a jet can cause observable short-term nongravitational effect is investigated. For three outbursts of comet Halley on November 12 and 15 and December 12, 1985, astrometric data of the comet on November 11~17 and December 8~15, 1985, are analysed, and it is found that deviation of observed geocentric right ascension and declination from calculated ones by the ephemeris for the comet just after these outbursts, α0-c and δ 0-c, is obviously more than error (Fig. 1). Therefore, the result shows that cometary outbursts indeed cause observable short-term nongravitational effect and that cases of these three outbursts were different.

探讨伴有喷流的彗星爆发是否造成可观测的非引力效应。分析哈雷彗星在1985年三次爆发时期的定位资料,结果表明,这三次爆发后哈雷彗星的地心赤经和赤纬跟历表推算值的偏差都明显地大于误差,说明彗星爆发确实造成可观测的短期非引力效应,且此三次爆发情况不同。

 
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