n. 用超高速离心器( ultracentrifuge的名词复数 )
a. 用超高速离心器( ultracentrifuge的比较级 )

n a high speed centrifuge used to determine the relative molecular masses of large molecules in high polymers and proteins
v subject to the action of an ultracentrifuge

Iran insists on full nuclear rights within NPT: nuclear negotiator

TEHRAN, Feb. 23 (Xinhua) -- Iran's chief nuclear negotiator Saeed Jalili said Saturday that the Islamic republic insists on its full nuclear rights within the framework of Nuclear Non- Proliferation Treaty (NPT). Making the remarks at an annual confe

发表于:2019-01-07 / 阅读(34) / 评论(0)

英语新闻

2005年NPR美国国家公共电台九月-Following the Monarchs in an Ultralight A

One of the world's most amazing migration is about to begin in earnest: 300 million monarch butterflies spread across North America are about to converge on small forests in the mounts of Mexico. This year, the butterflies have an unusual company as

发表于:2019-01-08 / 阅读(119) / 评论(0)

2005年NPR美国国家公共电台

VOA标准英语2009-Ultra-Orthodox Jews Protest Intel Sabbath Op

By Robert Berger Jerusalem 14 November 2009 An ultra-orthodox Jewish man is seen next to Intel's Jerusalem office building, 14 Nov 2009 Alleged violations of the Jewish Sabbath by a top international company prompted religious protests in Jerusalem

发表于:2019-01-14 / 阅读(61) / 评论(0)

VOA标准英语2009年(十一月)

2017年CRI China's major ultra-high voltage transmission lines in smooth operation

China has long depended on coal-burning power plants to fuel its explosive growth over the past three decades. As a result, air pollution has risen to alarming levels in central and eastern regions. Policymakers have been working hard to shift the co

发表于:2019-01-19 / 阅读(102) / 评论(0)

2017CRI中国国际广播电台

VOA常速英语2008年-Iran Announces Installation of More Centrifuges

By Aya Batrawy Cairo 08 April 2008 Iran's President Mahmoud Ahamadinejad announced on Tuesday that Iran is installing 6,000 new centrifuges at an uranium enrichment plant. The announcement drew sharp criticism from the United States and is expected t

发表于:2019-02-06 / 阅读(42) / 评论(0)

VOA常速英语2008年（四月）

经济学人177:伊朗与其核计划对话暂停

Iran and its nuclear plans 伊朗与其核计划 Time out 对话暂停 The West and Iran will negotiate for four more months, but the gap is wide 西方与伊朗将全面谈判对话延长四个月，但双方分歧很大 AFTER some unconvincing last

发表于:2019-02-17 / 阅读(36) / 评论(0)

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学英语单词

acbs

Aethroma-30

aliphatic polyester resin