诽谤
发表于 2025-3-25 06:42:55
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无孔
发表于 2025-3-25 09:09:57
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obeisance
发表于 2025-3-25 13:08:50
Ions,0 metres. Seasonal temperature fluctuations, from 19°C to 37°C, occur down to this depth, and the density and salinity of waters at this level vary with the seasons as well, of course, as with long-term changes in climate. However, below 40 metres these parameters remain unchanged throughout the yea
Obsessed
发表于 2025-3-25 19:07:35
Periodicity,ean to scientists? 1984 marks the sesquicentennial of the birth of the Russian scientist Dmitri Ivanovich Mendeleyev, the chief architect of the Periodic Table. Mendeleyev, who was the youngest of fourteen children, was born in Tobolsk, Western Siberia on 8 February 1834. But wasn’t Mendeleyev merel
HAIL
发表于 2025-3-25 21:06:00
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Fortify
发表于 2025-3-26 00:50:54
Groups III to VI,ich led her to challenge the contemporary theories. She deserves recognition as probably the first woman chemist of modern time. Jane Marcet wrote a classic introductory chemistry text which made a major impact on both sides of the Atlantic for nearly half a century.
OVER
发表于 2025-3-26 07:37:56
The Halogens and the Noble Gases,r of his life—he was killed in action on 4 November 1918 at the age of 25 years. The poem includes a description of the death of a soldier from chlorine poisoning. The title comes from the line ‘Dulce et decorum est pro patria mori’ by the Latin poet Horace. The line means ‘It is sweet and fitting t
Introduction
发表于 2025-3-26 09:07:58
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locus-ceruleus
发表于 2025-3-26 12:43:45
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含糊其辞
发表于 2025-3-26 18:54:20
Qualitative Research in the Post-Modern EraA radical new approach to solar energy may come from biotechnology—a broad class of systems that have at their core photosynthetic and biological energy conversion processes.