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Synthesis of ethyl iso nicotinate using BTEAC (benzyl triethyl ammonium chloride) as phase transfer catalyst was studied.

以BTEAC(苄基三基氯铵)为相转移催成了烟酸

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Methyl 1 phenyl Propanone was synthesized with benzene and iso butyryl chloride by using anhydrous aluminium trichloride as catalyst.

苯与丁酰氯在无水三氯铝作催的条件下制备苯基丙基酮。

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compole, compo-mould, componendo, component, component part, componential, components, components of cells, comport, comportable,

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3G, 401(K), a,

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冷知识百科大全

ISO standards are not free, and they're not even cheap.

ISO 是免费的, 而且价格也宜。

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TED演讲(视频版) 2023年8月合集

And once again, I go online, and I teach myself about ISO and aperture on YouTube.

上​​网,在 YouTube 上自学 ISO 和光圈。

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Compositae, composite, composite number, composite material, composite number, compositeness, compositequantity, compositeturnover, compositing, composition,

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3G, 401(K), a,
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