等离子体直读光谱仪

Direct from Dell

What I saw was a great opportunity to provide computing technology in a much more efficient way. That was the core idea of what became Dell Computer Corporation, and it’s one that we’ve stuck with

发表于:2018-11-28 / 阅读(129) / 评论(0)

疯狂英语2002年

太阳科普第8期

Now the speed of light is a very,very big number. 光速是个很大的数字 So if we just take a small amount of mass, 所以只要一点点质量 you get a huge amount of energy. 就含有大量能量 And that's the energy which actually powers ou

发表于:2018-12-07 / 阅读(95) / 评论(0)

太阳科普

天天练口语：The big star

Grant:Tess! I have good news! Great news! Wonderful news! 格兰特：黛丝！我有好消息！大好消息！天大的好消息！ Tess:What is it? 黛丝：那是什么？ Grant:A big star will perform at next weeks concert! 格兰特：有一个大

发表于:2018-12-26 / 阅读(37) / 评论(0)

天天练口语

China faces severe plasma shortage: health minister

BEIJING, Dec. 11 (Xinhua) -- China is faced with severe challenges in collecting enough blood plasma to produce medicines, Health Minister Chen Zhu said Sunday. Chen called on the public to join blood donation after donating blood plasma at the Beiji

发表于:2019-02-07 / 阅读(64) / 评论(0)

英语新闻

Lesson 44-1 Home Appliances 家用电器

Listen to the statements and check the correct answers. 1.Is sweeping out the tiny dust bothering you a lot? From now on if you have this machine, doing the housework will become a very easy job. This is a portable vacuum cleaner. lt's light and wire

发表于:2019-02-17 / 阅读(51) / 评论(0)

英语听力练习题

Chinese health minister donates plasma

CHENGDU, May 5 (Xinhua) -- Chinese Health Minister Chen Zhu donated plasma on Saturday in Chengdu, capital of southwest China's Sichuan Province, and called on health workers to take the lead in blood donation to ease the country's blood supply short

发表于:2019-02-18 / 阅读(61) / 评论(0)

英语新闻

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学英语单词

absorption cost

access way

aircraft transportation lighter

building of skeleton construction

cancellus

Cheonjeyeon Falls

coal preparation process