R " is a replaceable function , e . g . acetoxy, methoxy, their acyloxy and alkoxy homologs or halo.R ” 是取化基,如乙氧基 、 甲氧基及它们的环氧和烷氧同系物或卤基.The results show that zinc acetate - stearic acyloxy has thermal stability and synerg...
Her great friend is a girl called Julia we call them jays!她最好的朋友是个叫朱莉娅的女孩子,我们管她们叫“一对叽叽喳喳的小鸟”!There was only one person besides Ford who knew Julia Jameson.除了福特以外，只有一个人认识朱莉娅·詹姆森。He was engaged to Miss Julia Maria Boardman...
Davis won the 400m. hurdles in a new Olympic time of 49.3 sec.戴维斯以49.3秒的成绩刷新奥运会纪录，在400米跨栏赛跑中一举夺冠。There are several hurdles to be got over in this project.在这项工程中有一些困难要克服.I came to the hurdles and stood looking over into t...
母亲捏紧了谷物饼,饼干碎成了粉状的细屑.She squeezed the corn puffs and they crumbled into floury dust.对造纸供应中的细屑, 三氧化钙, 二氧化钛, 以及高岭土,具有优越的保湿能力.Superior wet - end retention of fines , CaCO 3, TiO 2, and kaolin clay in papermaking furnishes....
对于很多加利福尼亚的印第安人而言，猫头鹰是圣物。The owl is sacred for many Californian Indian people.路德曾抨击腓特烈保存在维藤贝格的圣物.Luther had already criticized the relics which Frederick kept at Wittenberg.神鹰 、 橡树和橄榄是他们的神圣物.To both the eagle, the oak, an...
消融冰川缩减的消蚀过程.The erosive processes by which a glacier is reduced.但明年, 税收的增长将会弥补一半缩减的开支.But next year, tax rises will make up nearly half of it.非常地面在我们的脚下是洗刷我们缩减的森林.The very ground under our feet is washing away as we cut ...