If the current trend continues, black farmers in the United States may be extinct by the end of this decade...如果当前趋势继续发展下去，美国的黑人农民将在这个十年末不复存在。...efforts to build up the prestige of the United Nations...为树立联合国的威望所作的努力I sc...
As a boy he was a Manchester United fan.小时候，他是曼联队的球迷。Kernaghan missed the United game after he ricked his neck.克纳汉因为扭伤脖子而错过了联赛。I scrolled down to find "United States of America".我向下滚动文档搜索“美利坚合众国”。...
What vegetable can tell me what to microelement the fruit contains?谁能告诉我哪些蔬菜水果含有哪些微量元素?Do microelement to check can fish the circumstance of what respect?做微量元素检查能查出哪些方面的情况?Being with much protein, aminophenol, mineral an...
目的:评价异 丁基 壳聚糖作为生物材料的安全性.Objective To evaluate the bio compatibility of isobutyl - chitosan as a material.使用二异丁基-二甲氧基硅烷, DQ催化剂的氢调敏感性更好.With di - iso - butyl dimethoxy DIBS, DQ catalyst was more sensitive to hydrogen regul...