共享软件 - 让你在购买之前试用的软件.Shareware - Try before you buy software downloaded from the net.试用的香水太多,你的鼻子很难闻出它们之间的区别.Beyond that your nose is less able to detect the difference.他们买这部可供试用的录像机.They took the vcr on approval....
Water soluble hydroxypropyl � � cyclodextrin was converted to acetonyl hydroxypropyl � � cyclodextrin via selective oxidation.通过选择性氧化,将水溶性优良的羟丙基β环糊精转化为丙酮基羟丙基β环糊精....