In 1857 America entered the toothbrush market when H. N. Wadsworth was awarded the first patent in America for their production.

1857年牙刷进入美国市场，H.N.沃兹沃斯第一个获得特许在美国生产牙刷。

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The field experiment was conducted to study the effect of organic N and mineral N combined application proportion in greenhouse celery production.

研究了田间试验条件下有机N与无机N不同配比对温室芹菜生产的影响。

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The production, demonstrated that N-application on the leaf surface could relax the supplying-demanding relation in soybean flowering period.

生产验证叶面给氮可以缓解大豆花荚期氮素供需之间的矛盾。

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Earlier at the Rome summit, U.N. chief Ban Ki-Moon called for a drastic increase in food production to meet the demands of a rising population and stave off a crisis brought about by oil prices, climate change and the impact of the biofuel market.

CNN: Ahmadinejad, Mugabe blame West for food crisis