magenta
发表于 2025-3-27 00:00:30
The Production of Beryllium,fore mainly associated with feldspar, quartz, and micas. Other sources of beryllium are bertrandite, Be.(OH).Si.O., and minor minerals such as chrysoberyl, Al.BeO., phenakite, Be.SiO., barylite, BaBe.Si.O., and helvite, ((Mn, Fe, Zn).Be.Si.O.S). These minor minerals, however, rarely occur in workabl
贫困
发表于 2025-3-27 01:42:25
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Meditative
发表于 2025-3-27 08:16:07
Nuclides,9.01218(1) . This is consistent with the nuclidic mass A.=9.0121822(4) of .Be, the only stable isotope of beryllium (isotopic abundance 100%) . Peiser et al. have recently reviewed how the atomic weight of Be has developed since 1961.
被告
发表于 2025-3-27 10:55:12
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绊住
发表于 2025-3-27 13:53:12
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Fierce
发表于 2025-3-27 18:20:05
8楼
新手
发表于 2025-3-27 23:13:38
8楼
障碍
发表于 2025-3-28 05:58:31
9楼
踉跄
发表于 2025-3-28 07:07:50
9楼
不感兴趣
发表于 2025-3-28 14:23:23
9楼