海洋化学元素时间分佈

Tokyo Electric Power Company says up to 120 tons of highly radioactive water may have leaked out of the crippled Fukushima Daiichi nuclear plant. Masayuki Ono is a spokesman for the company, which operates the nuclear plant. We followed correct proce

发表于:2018-12-19 / 阅读(34) / 评论(0) 分类 英闻天下

For most of us, the periodic table is a thing of beauty in the abstract, but for chemists it established an immediate orderliness and clarity that can hardly be overstated. Without a doubt, the Periodic Table of the Chemical Elements is the most eleg

发表于:2019-01-29 / 阅读(47) / 评论(0) 分类 万物简史

BEIJING, Feb. 5 (Xinhua) -- China on Tuesday unveiled reform guidelines on income distribution amid growing public concerns over a widening wealth gap. The guidelines encourage further work to improve the initial distribution system and stepped-up ef

发表于:2019-02-03 / 阅读(62) / 评论(0) 分类 英语新闻

Science and technology 科学技术 Astrochemistry 天体化学 The great test tube in the sky 空中的大试管 Space is one big chemistry set 宇宙是一个很大的化学装置 MOST people think of the empty space between the stars as being, wel

发表于:2019-02-04 / 阅读(26) / 评论(0) 分类 经济学人科技系列

D Fish Ears Tell Fish Tales Fish have ears. Really. They're quite small and have no opening to the outside world carrying sound through the body. For the past seven years, Simon Thorrold, a university

发表于:2019-02-06 / 阅读(111) / 评论(0) 分类 实用英语

What Is Fire? 火是物质燃烧过程中散发出光和热的现象,是能量释放的一种方式。火焰分为焰心、中焰和外焰,温度由内向外依次增高。燃烧过程必须有可燃物、燃点温度、氧化剂三项并存,缺一

发表于:2019-03-09 / 阅读(233) / 评论(0) 分类 英语听力文摘 English Digest