Neoplasia of the genitourinary tract accounts for about one fifth of adult tumors.泌尿生殖道肿瘤约占成人时期肿瘤的1/5.In the genitourinary tract, BK virus acts in a similar way.在泌尿生殖道, BK病毒的作用方式相似.AIM : To evaluate the therapeutic effec...
桑塔格一直是那种兼具美貌与智慧的人中龙凤。Sontag has always been that rarity, a glamorous intellectual.国际象棋长久以来被认为是智慧的体现。Chess has long been regarded as a measure of intellect.诸葛亮在民间传说中成了智慧的代名词.Zhuge Liang is a synonym for wisdom in folklore...
老人吃饭和取暖不应吝惜。Older people should not skimp on food or heating.做糕饼时不要吝惜奶油.Don't scant the butter when you make a cake.老年人不应过分吝惜食物或取暖方面的开销.Older people shouldn't skimp on food or heating....
方法: 用溴代及胺化反应合成了四甲基吡嗪衍生物.METHODS: The target compound was prepared by the bromination and amination reaction.用溴—甲醇溶解Al_2O_3, 其回收率在91%以上.If Al 2 O 3 is dissolved by Br 2 - CH 3 OH, its Recovery rate is above 91 %.用溴比用氯时产出率...