畸齿矫正学
发表于 2025-3-21 19:51:38
书目名称Astrophysik IV: Sternsysteme / Astrophysics IV: Stellar Systems影响因子(影响力)<br> http://impactfactor.cn/if/?ISSN=BK0163717<br><br> <br><br>书目名称Astrophysik IV: Sternsysteme / Astrophysics IV: Stellar Systems影响因子(影响力)学科排名<br> http://impactfactor.cn/ifr/?ISSN=BK0163717<br><br> <br><br>书目名称Astrophysik IV: Sternsysteme / Astrophysics IV: Stellar Systems网络公开度<br> http://impactfactor.cn/at/?ISSN=BK0163717<br><br> <br><br>书目名称Astrophysik IV: Sternsysteme / Astrophysics IV: Stellar Systems网络公开度学科排名<br> http://impactfactor.cn/atr/?ISSN=BK0163717<br><br> <br><br>书目名称Astrophysik IV: Sternsysteme / Astrophysics IV: Stellar Systems被引频次<br> http://impactfactor.cn/tc/?ISSN=BK0163717<br><br> <br><br>书目名称Astrophysik IV: Sternsysteme / Astrophysics IV: Stellar Systems被引频次学科排名<br> http://impactfactor.cn/tcr/?ISSN=BK0163717<br><br> <br><br>书目名称Astrophysik IV: Sternsysteme / Astrophysics IV: Stellar Systems年度引用<br> http://impactfactor.cn/ii/?ISSN=BK0163717<br><br> <br><br>书目名称Astrophysik IV: Sternsysteme / Astrophysics IV: Stellar Systems年度引用学科排名<br> http://impactfactor.cn/iir/?ISSN=BK0163717<br><br> <br><br>书目名称Astrophysik IV: Sternsysteme / Astrophysics IV: Stellar Systems读者反馈<br> http://impactfactor.cn/5y/?ISSN=BK0163717<br><br> <br><br>书目名称Astrophysik IV: Sternsysteme / Astrophysics IV: Stellar Systems读者反馈学科排名<br> http://impactfactor.cn/5yr/?ISSN=BK0163717<br><br> <br><br>
哑巴
发表于 2025-3-21 21:16:21
Radio-frequency Studies of Galactic Structure,short wavelengths (. = 14.6 m) he observed that part of this noise came preferentially from a certain azimuth. From the variation of this azimuth with the time of the day, and with the time of the year, he concluded that the source was related to the nuclear region of the Galactic System.
过份
发表于 2025-3-22 04:09:50
Star Clusters,pes of stellar populations puts them in the spotlight since galactic clusters represent population I and globular clusters population II. The increasing development of theories of stellar evolution rests on star clusters, which furnish a group of stars presumably created from the same material at ab
Paleontology
发表于 2025-3-22 05:18:09
Discrete Sources of Cosmic Radio Waves,high intensity which are described by the term .. At the present time our knowledge of the nature of these sources is very limited and the description . is correspondingly vague. No attempt will be made here to define precisely what is classed as a discrete source, except to state that the term has
座右铭
发表于 2025-3-22 09:05:44
Radio Frequency Radiation from External Galaxies,sion from a region in the constellation of Cygnus. They deduced that the fluctuating component “could only originate from a small number of discrete sources”. This was confirmed when . and .. showed that the fluctuations were due to an intense emitting region less than eight minutes of arc in extent
我吃花盘旋
发表于 2025-3-22 13:09:35
Classification and Morphology of External Galaxies,e . form of some nebulae was first detected visually by Lord Rosse and his assistants between 1845 and 1850. and the appellation . first used in a purely descriptive way was applied to non-spiral tub presumably external stellar systems by . in 1852..
bacteria
发表于 2025-3-22 19:58:50
General Physical Properties of External Galaxies,The order of magnitude of their dimensions, luminosities and masses was established over thirty years ago by . [.] and by . [.]. In the following decade more detailed studies of their colours, spectra and dynamics were undertaken principally at the Harvard, Lick, Mt. Wilson, Lund and Stockholm obser
痴呆
发表于 2025-3-22 22:27:04
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祝贺
发表于 2025-3-23 04:24:46
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防锈
发表于 2025-3-23 05:59:48
Large Scale Organization of the Distribution of Galaxies,hese ideas is that the galaxies are clustered, and the other is that the large-scale organization of the distribution of galaxies is statistically uniform. Occasionally, the possibility of higher order clustering of galaxies is also mentioned.