METHODS: The target compound was prepared by the bromination and amination reaction.方法: 用溴代及胺化反应合成了四甲基吡嗪衍生物.The effects of triacetoneamine concentration on hydrogenation and amination were discussed.论述了三丙酮胺纯度对加氢和还原胺化反应的影...
a powerful car with a 170 horsepower engine发动机为170马力的大功率汽车The worshiper thinks that the worst is the insufficient horsepower.崇拜者认为最坏的事是马力不足.The engine puts out thirty horsepower.这台发动机可产生30马力....
Intoxication interferes with memory and thinking, speech and coordination.醉酒影响记忆、思考、语言与协调性。Intoxication interferes with speech and coordination.醉酒会影响言语能力和协调性。He began to drink, drank himself to intoxication, till he slep...