在1,2--二亚甲基环丁烷中并不发生这种现象.This phenomenon does not occur with 1 - 2 - dimethylenecyclobutane.环丁烷主要成 “ 蝶式 ” 构象存在.Cyclobutane exists predominantly in a " butterfly " conformation.四 号 溶剂主要成分为液化丁烷.The main component in 4 # solv...
This massive overbuild is being colossal scale of industrialisation.大规模的工业化正在造成这种过度累积.Untrammelled industrialisation, particularly in poor countries, is contaminating rivers and aquifers.不节制的工业化, 尤其是在穷国, 正在污染河流和地下含水层们.Te...
He throttled her and hid her body.他掐死她后把她的尸体藏了起来。He throttled the guard with his bare hands.他徒手掐死了卫兵。The pilot got very low before he throttled back.飞行员减速之前下降得很低....