n. 杯形器；【动】(杯状)吸盘；【植】杯状体
[网络] 吸附盘；芽杯；对杯狀凹槽

数学英语 06 How to Calculate Mean Values

by Jason Marshall In the last article, we talked about averages and one specific way statistics can help answer questions without letting emotions interfere. But the type of average value we talked about is just one of manyuseful meanings assigned to

发表于:2019-01-02 / 阅读(101) / 评论(0)

数学英语

数学英语 07 How to Calculate Median Values

by Jason Marshall In the last article, we learned that there are several ways to calculate the average value of a sample of data. We focused on one such method, the arithmetic mean, and used it to calculate the average number of potato chips in a bag

发表于:2019-01-02 / 阅读(108) / 评论(0)

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By Sonja Pace London 06 March 2008 Britain plans to introduce a controversial identification card plan in the coming months, with foreign workers first in line to get the compulsory ID's. VOA's Sonja Pace has details from London. The British governme

发表于:2019-01-07 / 阅读(59) / 评论(0)

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STEVE EMBER: Welcome to THIS IS AMERICA in VOA Special English. Im Steve Ember. FAITH LAPIDUS: And Im Faith Lapidus. Every ten years the United States government counts the national population and asks people questions about how they live. Results fr

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By Anya Ardayeva Moscow 21 March 2007 watch Tuberculosis Russia report Russia is among the 22 countries in the world with the highest rate of tuberculosis. The U.S. Agency for International Development (USAID) says that after years of decline during

发表于:2019-01-13 / 阅读(96) / 评论(0)

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发表于:2019-01-14 / 阅读(87) / 评论(0)

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automatic changeover switch