dilate
发表于 2025-3-21 19:50:30
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Cosmopolitan
发表于 2025-3-21 21:45:54
978-3-031-65345-2The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerl
喷出
发表于 2025-3-22 01:46:12
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Explosive
发表于 2025-3-22 06:58:07
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泛滥
发表于 2025-3-22 09:29:31
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爱哭
发表于 2025-3-22 12:57:57
Claudia N. Keilhauer,François C. Delorimirrors to gather light. Catadioptric telescopes contain a combination of lenses and mirrors. Refractors with single-lens objectives suffer severely from chromatic aberration. Doublet objectives, sometimes called acromats, use two lenses to reduce some of the chromatic aberration. Using three or mor
爱哭
发表于 2025-3-22 19:25:28
Microperimetry in Macular Disease,nd CMOS cameras. Simple astrophotography can be conducted using a camera with a wide-field lens mounted on a tripod. Exposure time must be small since the Earth’s rotation causes celestial objects to move. Longer exposures using a camera and lens can be conducted with the camera mounted on a device
BROOK
发表于 2025-3-22 23:32:11
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猜忌
发表于 2025-3-23 03:27:36
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合唱团
发表于 2025-3-23 06:14:02
https://doi.org/10.1007/978-3-030-19059-0rsely proportional to the square of its distance. The luminosity of a star depends on its temperature and surface area. Stars are primarily classified by their temperature. A Hertzsprung-Russell (HR) diagram plots luminosity versus temperature for stars. Most stars fall on a swath from upper left to