马六甲海峡和新加坡海峡是世界上最繁忙的海峡之一,每天有几百艘船舶在航行,满载的大型散货船、VLOC和VLCC质量大、惯性大、吃水大、操纵困难、避让他船困难,海峡海底有数量很多的浅滩与沙坡,由于新冠疫情和乌克兰战争的原因,导致值班驾驶员的缺乏,本应该锻 ...
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.
期刊简介《国际政治经济学评论》(Review of International Political Economy)是一份涵盖国际政治经济学研究的双月刊同行评审学术期刊。其成立于1999年,由Routledge出版。本刊是国际政治经济学领域的主流期刊之一,与《新政治经济学》(New Political ...
Scientists researching Alpine glaciers store ice in Antarctica. By analysing air bubbles in the ice they may be able to predict the future ...