exorbitant
发表于 2025-3-28 15:58:35
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Wernickes-area
发表于 2025-3-28 20:09:57
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Individual
发表于 2025-3-29 02:21:13
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心胸开阔
发表于 2025-3-29 05:26:11
Die Volkshochschule im 21. JahrhundertThe measurement of time was one of the first applications of astronomy and many of observational astronomy’s underpinnings are related to time. Knowing the Julian date and local sidereal time are key in identifying what objects can be observed and when.
CUR
发表于 2025-3-29 08:22:30
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美色花钱
发表于 2025-3-29 15:23:17
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ureter
发表于 2025-3-29 16:41:44
Time,The measurement of time was one of the first applications of astronomy and many of observational astronomy’s underpinnings are related to time. Knowing the Julian date and local sidereal time are key in identifying what objects can be observed and when.
GLARE
发表于 2025-3-29 23:17:20
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追逐
发表于 2025-3-30 03:43:49
Spectrography,In this chapter, we introduce the concept of spectrography. Building on the previous chapters on the nature of light and astronomical imaging we discuss the spectrograph and show through a simple practical how to take, reduce and interpret our first astronomical spectrum
黑豹
发表于 2025-3-30 06:54:03
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