能量传送(的)速度

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(279) / 评论(0)

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(113) / 评论(0)

2005年NPR美国国家公共电台

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

中国企业投资巴西电力行业

The State Grid Corporation of China signed an agreement with Brazil's Eletrobras utility last year to build high-voltage transmission lines for the Belo Monte hydroelectric dam. Scheduled to complete in 2017, the project is believed to be the largest

发表于:2019-02-04 / 阅读(31) / 评论(0)

英语新闻

英伦广角 2012-01-21 英国宣布天然气降价

Blaine G Scottish power customer ,but last year another firm YIYANG build him 3,000 pound by mistake ,even though he won't their customer, after few threatening letters .he eventually receive hundred pounds compensation from YIYANG 75 pound from the

发表于:2019-02-06 / 阅读(21) / 评论(0)

英伦广角

《荒野求生》之跟着贝尔去冒险第475期:最隐蔽的方式

The atmospheric pressure as we climb is getting so low 气压在逐渐减小 that without any air supply,I'd be unconscious within 20 seconds. 如果不戴呼吸器不用20秒我就会休克过去 I have to breathe 100% oxygen to avoid getting nitro

发表于:2019-02-17 / 阅读(42) / 评论(0)

荒野求生

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学英语单词

axiom of linear completeness

bail over to keep the peace