Buses and trains use much less fuel per person than cars.公共汽车和火车的人均燃料耗费量比轿车小得多。Freight trains travel slowly on upgrades into the hills.火车徐徐向山上驶去.Many trains have been cancelled and a limited service is operating on other...
Dimorphism The existence of two distinct forms.二型现象:出现两种不同的类型.These variables fishers and Bayes discriminant functions to distinguish sexual dimorphism the three strains.结果表明:不同品系性差不同,判别函数对于性别判定具有明显的实用价值....
Preparation of diglyceride by lipase - catalyzed glycerolysis of soybean salad oil with glycerol batchtank reactor was studied.研究了脂肪酶催化大豆色拉油甘油解制备二甘酯过程.Diglyceride, a kind of metabolic intermediate of oil & fat , can be p...