Butyraldehyde 1,2 proparediol acetal was synthesized by using stannous chloride as catalyst.以非质子酸氯化亚锡为催化剂,催化合成了丁醛-1,2-丙二醇缩醛.Butyraldehyde 1,2 propanediol acetal was synthesized by using stannous chloride as catalyst.以非质子...
用光电分光光度计能得到较佳结果.Photoelectric spectrophotometers give better result.研制出一种简易光导纤维分光光度计.A simple optical fiber reflectance spectrophotometer has been presented.应用分光光度计研究了细胞色素c氧化酶的稳态动力学.The steady - state kinetics of CCO was...
他是英格兰西部一所公学的校长。He was headmaster of a public school in the West of England.北威尔士最西部是说威尔士语人的聚居区。The western-most part of north Wales is a stronghold of Welsh-speakers.西部可能会有一段天气晴朗的日子。There is a chance of sunny spells in th...