目的构建β淀粉样前体蛋白裂解酶 ( BACE ) 特异性小干扰RNA真核表达载体.Objective To construct eukaryotic expression vector of siRNA specific for � � - site APP cleaving enzyme ( BACE ).褐藻胶裂解酶能裂解褐藻胶制备寡糖, 是一种重要的工具酶.Alginate lyase can degrade alginates ...
如果汽车采用更多塑料元件,寿命会更长一些。If you build more plastics into cars, the car lasts longer.1981年,新型的日产汽车平均每升汽油能跑13千米。New Japanese cars averaged 13 km to the litre in 1981.刚出首都,总统无人护卫的汽车就遭到了伏击。The President's unescorted vehicle...