Abstract The minimal heart rate recorded with 24 - hour dynamic electrocardiagraphic ( DCG ) monitoring in 1070 elderly patients was analysed.回顾并随访分析1070例老年患者24小时动态心电图 ( DCG ) 中的最低心率.Objective To observe the DCG and chan...
This paper advances the preparation method of erucamide by direct ammonolysis of rape oil. sol - vent crystallization.本研究提出菜籽油直接氨解、溶剂脱脂、蒸馏预分离、溶剂结晶提纯制取芥酸酰胺的方法....
She was still hale and hearty in her nineties.她九十多岁了，但身子骨还是很硬朗。At the peak of its popularity in the late nineties, the band sold ten million albums a year.20世纪90年代后期那个乐队最红的时候,每年售出1,000万张唱片.Into her nineties, her thinking...
He managed to acquire a thin veneer of knowledge to mask his real ignorance.他设法装出有点知识的外表，用来掩饰自己的无知。She remained in blissful ignorance of these events.她有幸一直不知道这些事情.What shocked me was the discourteousness and ignorance of...