反省
发表于 2025-3-25 03:21:01
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戏法
发表于 2025-3-25 09:43:10
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Adenocarcinoma
发表于 2025-3-25 13:23:34
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巧办法
发表于 2025-3-25 16:48:51
,Selbstarchäologie als Ich-Arbeit,matter is continuous, but if not then matter must consist ultimately of very small entities now known as ‘atoms’. This situation remained unresolved for many centuries as there was no evidence to support either of these possibilities. In fact, it was not until the beginning of the nineteenth century
咯咯笑
发表于 2025-3-25 20:45:07
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借喻
发表于 2025-3-26 00:07:59
,Leben und Führen mit dem achtfachen Pfad,blackened when a uranium compound was placed near it. Careful investigation showed that this property had no relation to fluorescence or to X-rays, but is a property of the element uranium itself. It is now known to be due to radioactivity in which the uranium gives out radiations spontaneously, and
deadlock
发表于 2025-3-26 06:51:37
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愚蠢人
发表于 2025-3-26 10:55:31
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Malcontent
发表于 2025-3-26 13:31:31
Das Komische: Wann lachen wir?,y. As a piece of metal is heated to incandescence it first becomes red at about 850 K. Later, as the temperature rises further, it becomes yellow and then white at about 3000 K, when all the visible spectrum is being radiated. Experimental investigation of the energy distribution for various tempera
Demulcent
发表于 2025-3-26 19:08:05
Das Komische: Wann lachen wir?,rning the distribution of lines in a spectrum was discovered by Balmer and Rydberg. The interpretation of this law in terms of atomic structure began with the work of Bohr in 1913. It revealed that a study of spectra could provide a wealth of information about atomic structure. Hydrogen, being the s