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.R " is a replaceable function , e . g . acetoxy, methoxy, their acyloxy and alkoxy homologs or halo.蒸馏得质量分数高于98%的邻乙氧基苯甲酸,收率为92%.Distillation gave o ethoxybenzoic acid with 98 % of the p...
More of the land is planted to cabbages than to tomatoes.种白菜的地比种西红柿的多.Alfalfa, apples, cabbages, and onions are widely grown.苜蓿 、 苹果 、 洋白菜和洋葱都广泛种植.He grows cabbages on his farm.他在农场种植包心菜....
He spun the revolving door round and round.他把那个旋转门转了又转.The women prepared, spun and dyed the wool...女人们处理羊毛,纺羊毛并给羊毛染色。At present, hybrid yarn includes commingled yarn, core - spun yarn, and - wrapped - yam.目前混纤纱主要有混合纱 、 ...
He has probably said goodbye to his last chance of Olympic gold.他可能已经失去了夺取奥运会金牌的最后机会。An Olympic gold medal is the most sought-after prize in world sport.在世界体坛上，一枚奥运会金牌是最令人向往的奖项。The Olympic organisers say that matters are...
Based on thermodynamics principle, the feasibility for melting iron borings in cupola was ana lysed.从热力学角度分析了在冲天炉内熔炼铸铁切屑的可行性.Some of them doubted the feasibility of the proposal.有些人怀疑这一提议的可行性.The feasibility that the con...