|
saponification 音标拼音: [səp ,ɑnəfək'eʃən] n. 皂化 皂化 saponification n 1: a chemical reaction in which an ester is heated with an alkali ( especially the alkaline hydrolysis of a fat or oil to make soap) Saponification \ Sa* pon` i* fi* ca" tion\, n. [ Cf. F. saponification. See { Saponify}.] The act, process, or result, of soap making; conversion into soap; specifically ( Chem.), the decomposition of fats and other ethereal salts by alkalies; as, the saponification of ethyl acetate. [ 1913 Webster]
Hydrolysis \ Hy* drol" y* sis\, n. [ Hydro-, 1 - lysis.] ( Chem.) A chemical process causing the splitting of a chemical bond by the addition of the elements of water. Where the bond which is split is not part of a ring structure, this process causes formation of two compounds from one compound plus water, as in the hydrolysis of the ester bonds of fats during { saponification}. [ Webster 1913 Suppl. PJC]
|
安装中文字典英文字典查询工具!
中文字典英文字典工具:
英文字典中文字典相关资料:
- 和尚鹦鹉 - 知乎
和尚鹦鹉约有4种左右的亚种，它们的生命力非常强韧，寿命长达25~30年,能耐严寒，而它们的说话能力是中型鹦鹉中不错的种类之一，在全世界所有的鹦鹉中只有它们与一些爱情鸟是自己筑巢繁殖的，手养的和尚鹦哥十分可爱，喜欢亲近主人，市售多为野生鸟，近年来进口的野生鸟数量非常多，价格相当低下，和尚鹦哥有许多种的变种：蓝色、白色、黄色、肉桂色等，但是变种的价格比原生种贵很多， 仅有蓝色较常见，约有4种亚种。 系统繁忙，请稍后再试
|
|