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Synthesis of ethyl iso nicotinate using BTEAC (benzyl triethyl ammonium chloride) as phase transfer catalyst was studied.
以BTEAC(苄基三乙基氯化铵)为相转移催化剂合成了异烟酸乙酯。
Methyl 1 phenyl Propanone was synthesized with benzene and iso butyryl chloride by using anhydrous aluminium trichloride as catalyst.
由苯与异丁酰氯在无水三氯化铝作催化剂的条件下制备苯基异丙基酮。
ISO standards are not free, and they're not even cheap.
ISO 标准不是免费的， 而且价格也不便宜。
And once again, I go online, and I teach myself about ISO and aperture on YouTube.
我再次上网，在 YouTube 上自学 ISO 和光圈。
" It is inappropriate to report (about Pao Cai winning the ISO) without differentiating Kimchi from Pao Cai of China's Sichuan, " the statement said.
" 在不将韩国泡菜与四川泡菜区分开的情况下报道泡菜获得国际标准化组织认证是不恰当的。"
依恋情感网英汉例句词典收录3870147条英语例句词条，基本涵盖了全部常用英语单词的释义及例句，是英语学习的有利工具。