It's from sulfides, like from silver coins.
這是硫化物, 像銀幣表面上的那樣.
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Catalysis: Development of chirometallopor - phyrins as enantioselective oxidation catalysts of alkenes and sulfides.
催化作用: 開發(fā)新型手性金屬催化烯類及硫醚類之對映選擇性氧化.
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The soluble sulfides are unstable, while the stable sulfides are unsolvable.
可溶的硫化物都不穩(wěn)定, 穩(wěn)定的硫化物都不可溶.
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The Xitan gold deposit is of a quartz vein - type with little sulfides.
西灘金礦屬少硫化物石英脈型金礦.
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The structure, properties, and applications of transition metal sulfides IF nano - materials , i.
系統(tǒng)的介紹無機類富勒烯金屬硫化物納米管、納米洋蔥及其 納米 復合物的結構 、 性質和應用.
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Sulfur often combines into sulfides or sulfates.
硫磺,往往結合成硫化物或硫酸鹽.
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Carbon steel -- Very good mechanical properties; good resistance to stress corrosion and sulfides.
碳鋼 -- 具有很好的機械特性; 良好的抗金屬超應力腐蝕的能力和抗硫化物腐蝕的能力.
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In contrast, transition - metal sulfides are less reactive and susceptible to poisoning and can show higher selectivity.
相反, 過渡金屬硫化物作為催化劑反應活性低、不容易中毒顯示了很高的選擇性.
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The silver in ores occurs mainly as independent silver minerals sulfides or in crack disulfide.
銀主要以獨立銀礦物的形式存在于各種硫化物礦物邊緣及礦物裂障中.
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The mineralization of silver at the late stage of formation of sulfides, i. e.
銀形成于硫化物成礦后期的硫銻鉛礦─方鉛礦─ 黃銅礦 ─銀黝銅礦階段.
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The adsorbing agents such as molecular sieves, metal oxides, active carbons, etc sulfides removal are presented.
介紹了分子篩類 、 金屬氧化物類 、 活性炭類等脫硫吸附劑.
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These sulfides can cause illness, however at levels about a thousand times greater than that.
這些硫化物具有致病性, 但前提是,把可樂中含有的殘留量乘上一千倍.
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The extraction behavior of dialkyl ( aryl ) Sulfides may be controlled by polar and steric substituents effects.
二烴基 ( 基 ) 醚的萃取行為受極性和空間取代基效應的控制.
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Interest in transition - metal sulfides arises from their significance in industrial catalysis and biology.
過渡金屬硫化物在工業(yè)催化和生物和上的重要性引起了廣泛的研究興趣.
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Its presentational feature is development of structure and enrichment of granule xenomorphic sulfides.
其表象特征為構造發(fā)育,細粒他形硫化物富集.
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