Exterior
发表于 2025-3-25 04:59:31
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EXCEL
发表于 2025-3-25 08:04:03
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健谈的人
发表于 2025-3-25 12:54:02
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大骂
发表于 2025-3-25 16:19:49
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corn732
发表于 2025-3-25 21:52:15
Nickel,n Forchhammer (1855) found nickel in oak wood. More routine examination of plant material for the presence of nickel did not occur until Tschugaeff (1905) developed the dimethyl glyoxime method for determining trace quantities. Kraut (1906) found nickel in peat and brown coal ashes, while Cornec (19
施加
发表于 2025-3-26 01:20:20
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巨头
发表于 2025-3-26 04:56:37
Metalloids,f others to the health of plants, livestock and man. This Chapter is concerned with three elements, arsenic, selenium and antimony, which are commonly identified with the toxic or potentially toxic metals, but in view of their chemical and physical properties they are more suitably termed metalloids
强制性
发表于 2025-3-26 10:02:57
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尖酸一点
发表于 2025-3-26 16:10:37
Yurika Miyoshi,Reiko Koga,Kenji Hamase. Mason (1966) includes these elements in the chalcophile group, for they normally occur in sulphide minerals and form volatile species upon combustion. They are also referred to as atmophile elements by some authors because of their volatility.
范例
发表于 2025-3-26 20:13:41
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