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用Mp3背六级单词053

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发表于:2018-12-01 / 阅读(265) / 评论(0)

用Mp3背六级单词

数学英语 35 How to Convert Units

by Jason Marshall In the last two articles weve talked about the meaning of multiplication and how to use this meaning to make multiplying fractions easier. Today, were going to put everything weve learned about multiplication to good use by learning

发表于:2018-12-07 / 阅读(198) / 评论(0)

数学英语

数学英语 36 How to Convert Units

by Jason Marshall In the last article, we began discussing how to convert from one system of units to anotherfor example from miles to kilometersand how all of this relates to the multiplicative identity. But we didnt quite have enough time to get to

发表于:2018-12-07 / 阅读(201) / 评论(0)

数学英语

经济学人157:高耸的美丽

Technology Catalog 技术前沿 Towering Beauty 高耸的美丽 A new way of transmitting electricity may soon be coming to a field near you 输电新法可能很快推出 A PYLON is supposed to be a beautiful thing. In ancient Egypt, pairs of taperi

发表于:2019-01-26 / 阅读(245) / 评论(0)

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carbamyl group

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