[网络] 等离子氮化硅；等离子氮化矽

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

AS IT IS 2015-09-01 Los Angeles' Silicon Beach Becoming Like Silicon Valley

AS IT IS 2015-09-01 Los Angeles' Silicon Beach Becoming Like Silicon Valley America's high technology industry is centered in northern California. The area, known as Silicon Valley, is a short drive from San Francisco Bay. Silicon Valley is home to G

发表于:2018-12-08 / 阅读(54) / 评论(0)

2015年VOA慢速英语(八)月

经济学人92:一种流行新材料的新用途

Science and Technology Materials science Cracking a problem 科技材料科学通过裂纹解决问题 Another use for a fashionable, new material 一种流行新材料的新用途 LIKE all other human activities, science is subject to fads. 像其它

发表于:2019-01-26 / 阅读(39) / 评论(0)

经济学人科技系列

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)

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学英语单词

a green wound is soon healed

academic integrity

addictivenesses

administrative generalist

Agapetes miranda

amino-methylene-phosphonate

anomalous singularity