Synthesis of ethyl iso nicotinate using BTEAC (benzyl triethyl ammonium chloride) as phase transfer catalyst was studied.
以BTEAC(苄基三乙基氯铵)为相转移合成了烟酸乙。
Methyl 1 phenyl Propanone was synthesized with benzene and iso butyryl chloride by using anhydrous aluminium trichloride as catalyst.
与丁酰氯在无水三氯铝作的条件下制备基丙基酮。
声明:以上例句、词性分类均由互联网资源自动生成,部分未经过人工审核,其表达内容亦不代表本软件的观点;若发现问题,欢迎向我们指正。
ISO standards are not free, and they're not even cheap.
ISO 是免费的, 而且价格也宜。
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。
关注我们的微信
下载手机客户端
划词翻译
详细解释