Northun诺特洪
northadj.北方的;北的adv.向北方n.北方;北
North Atlantic Oscillation北大西洋涛动(NA0)
North Atlantic Radio System北大西洋无线电系统
North Korea's nuclear issue脱氧核糖核酸病毒
North-Pacific disjunction北太平洋间断分布
North and south widen areas南北展宽区
North American colonization北美殖民
North China type coal field华北型煤田