质心速度向量

专业术语—基因专业词汇T/V/W/Y

发表于:2018-12-08 / 阅读(147) / 评论(0)

医务英语

VOA慢速英语2018 科研人员：银河系中心存在许多黑洞

Researchers: Many Black Holes in Center of Milky Way Galaxy Astronomers say the center of our galaxy has plenty of strange, super gravity objects. For years, scientists believed that circling the center of galaxies, including our own Milky Way galaxy

发表于:2019-01-03 / 阅读(121) / 评论(0)

2018年VOA慢速英语(四)月

机械类词汇大全-10

379 、石棉 asbestos;asbestus 380 、石膏 PlasterofParis 381 、示波器 oscilloscope 382 、立体图 pictorialdrawing 383 、交流电流 alternatingcurrent(a.c.) 384 、交流电压 a.c.

发表于:2019-01-03 / 阅读(160) / 评论(0)

英文名句短语

麻省理工学院公开课：单变量微积分01：导数和变化率

分集介绍：导数，斜率，速度与变化率 Derivatives.slope.velocity.rate.of.change

发表于:2019-01-05 / 阅读(402) / 评论(0)

麻省理工学院公开课：单变量微积分

2005年NPR美国国家公共电台九月-E=mc² at 100

One hundred years ago today, September (the) 27th, 1905, a physics paper was dropped into the mail, addressed to a German journal called AT. The paper was penned by a 26-year-old Swiss patent clerk with dark curly hair years before he sprouted that s

发表于:2019-01-08 / 阅读(213) / 评论(0)

2005年NPR美国国家公共电台

计算机英语高级词汇·CPU-3

SEC（Single Edge Connector，单边连接器） Shallow-Trench Isolation（浅槽隔离） SIMD（Single Instruction Multiple Data，单指令多数据流） SiO2F（Fluorided Silicon Oxide，二氧氟化

发表于:2019-01-09 / 阅读(173) / 评论(0)

实用英语

美国科学60秒 SSS 2013-05-13

This is Scientific American's 60-second science. I'm Carrie Haphgn. Just take a minute. It's tough to have a job with the bosses always riding you. That's literally the case with horse. Now a study finds that the stress experience by the acquire s co

发表于:2019-01-20 / 阅读(140) / 评论(0)

Scientific American(五)月

英语听力：自然百科穿越银河系的旅行 Through Milky Way—21

Imagine the disc of our galaxy, if you just took a disc of stars and put it there, gravity would tend to make this disc collapse/ into itself and it would immediately just fall together. That is not what we see with the galaxy. Whats actually going o

发表于:2019-01-22 / 阅读(133) / 评论(0)

自然百科2011年

英语听力：自然百科穿越银河系的旅行 Through Milky Way—15

Each tag is whipping around the center of the galaxy, the particular, the most striking thing you will notice is the motion of SO2.So SO2 goes on an incredible roller-coaster ride. It comes whipping around and then back out. Something with tremendous

发表于:2019-01-22 / 阅读(117) / 评论(0)

自然百科2011年

英语听力：探索发现 2014-05-21 BBC 地平线：陨石的真相-5

The explosion generated a shockwave so massive it wasdetected over 15,000 kilometres away. The low-frequency waves were picked up bymonitoring stations. So it is kind of like a listening network around theworld. Thats right. Theyre not set up for fir

发表于:2019-01-23 / 阅读(109) / 评论(0)

探索与发现2014年

英语听力文摘 English Digest 506、跷跷板的乐趣

Remember seesaws? Those things were great. But there was often a problem. Suppose theres a big kid on one side and a smaller kid on the other side. The seesaw just stays in one position: big kid on the ground, smaller kid up in the air. No fun. After

发表于:2019-01-26 / 阅读(127) / 评论(0)

英语听力文摘 English Digest

英语听书《海底两万里》第18期第2章正与反(7)

All right then! Imagine this weapon to be ten times stronger and the animal ten times more powerful, launch it at a speed of twenty miles per hour, multiply its mass times its velocity, and you get just the collision we need to cause the specified ca

发表于:2019-01-27 / 阅读(118) / 评论(0)

《海底两万里》中英双语有声读物

Philadelphia guard Richardson undergoes successful knee surgery

WASHINGTON, Feb. 19 (Xinhua) -- NBA's Philadelphia 76ers announced Tuesday that their guard Jason Richardson has undergone successful knee surgery. The 12-year NBA veteran, who has not played for a month and will be sidelined for the rest of the seas

发表于:2019-02-04 / 阅读(172) / 评论(0)

英语新闻

潘基文2014年世界卫生日致辞

Secretary-Generals Message on World Health Day 秘书长世界卫生日致辞 7 April 2014 2014年4月7日 Every year more than one million people die from diseases carried by mosquitoes, flies, ticks and other insects, such as triatomine bugs. These

发表于:2019-02-09 / 阅读(165) / 评论(0)

英语笔译

美国语文第五册第293期:野鸽过客(2)

Whilst waiting for dinner at Youngs inn, at the confluence of Salt River with the Ohio, 在当地青年旅馆就餐前的闲暇期间，在盐湖与俄亥俄州一处接壤地带， I saw, at my leisure, immense legions still going by, with a front r

发表于:2019-02-13 / 阅读(128) / 评论(0)

美国语文第五册

Varejao to miss up to two months

CLEVELAND, Jan. 9 (Xinhua) -- Cleveland Cavaliers' Brazilian center Anderson Varejao will be sidelined in the next two months after it was revealed he needs surgery on his right knee. Varejao suffered the injury during the Cavaliers' 113-99 defeat to

发表于:2019-02-18 / 阅读(181) / 评论(0)

英语新闻

【英语时差8,16】跷跷板-下

Theres a simple way to figure out where the center of mass is. If the big kid is two times as heavy as the little kid, then their mutual center of mass will be two times closer to the big kid than to the little kid. Three times heavier and the center

发表于:2019-02-23 / 阅读(148) / 评论(0)

英语时差8，16

【英语时差8,16】跷跷板-上

发表于:2019-02-23 / 阅读(146) / 评论(0)

英语时差8，16

英语听力文摘 English Digest 168、大孩子，小孩子

发表于:2019-02-24 / 阅读(154) / 评论(0)

英语听力文摘 English Digest

【英语时差8，16】地洞

Did you ever dream of digging a hole so deep it came out the other side of the earth? Let's play that game again, using a little physics. First we have to imagine that our tunnel is lined with super-heat-resistant material so we can pass through laye

发表于:2019-03-06 / 阅读(204) / 评论(0)

英语时差8，16

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