羟基测定

英文故事剧坚定(Determination)

In 1883, a creative engineer named John Roebling was inspired to build a spectacular[壮观的] bridge connecting New York with Long Island. However bridge-building experts throughout the world thought that this was an impossible feat and told Roebling

发表于:2018-12-11 / 阅读(103) / 评论(0)

英文故事剧

高中英语人教版高三1 08

[00:03.08]A person of great determination [00:07.65]Lesson 29 [00:11.60]1 Dialogue [00:15.36]Jane and Kate are leaving the swimming pool. [00:20.69]JANE:See you next Friday. [00:24.14]KATE:Next Friday?Why,what's happening?I'm going away for the weeke

发表于:2018-12-13 / 阅读(128) / 评论(0)

高中英语人教版高三

SSS 2008-06-23

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? On June 4th we told you about iron snowflakes on Mercury. Today we have some radical news about the atmosphere of Venus. Literally, a radical is a molecule that reacts e

发表于:2018-12-24 / 阅读(49) / 评论(0)

Scientific American(六)月

SSS 2009-12-10

Little girls are made of sugar and spice and, according to a study published in the journal Cell, a fierce determination to maintain their girlishness. Because it seems that a single gene keeps their ovaries from turning into testes. Scientists have

发表于:2018-12-24 / 阅读(47) / 评论(0)

Scientific American(十二)月

专业术语—SARS专业词汇（二）

Erythromycin,红霉素 Azithromycin,阿奇霉素 Clarithromycin,克拉霉素 Fluoroquinolones and their derivatives （e.g. levofloxacin）,多西环素（如：脱氧土霉素） Tetracyclines （e.g

发表于:2019-01-03 / 阅读(46) / 评论(0)

医务英语

麻省理工学院公开课：单变量微积分03：求导四则运算及三角函数导数

分集介绍：导数，商数，正弦和余弦 Derivatives.of.products.quotients.sine.cosine

发表于:2019-01-05 / 阅读(287) / 评论(0)

麻省理工学院公开课：单变量微积分

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学英语单词

abscissor

absorption of drug

Aconitum alboviolaceum

Amesiodendron tienlinense

assimilatory colouration

at ... best

balderstone