The U. S. bacterial limit is no more than 500 colony-forming units of bacteria per millilitre of water.

美国的细菌限制标准是毫升的水中不含有超过500菌落的细菌。

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Now scientists say there's another system forming in the Pacific that's much larger and could have dramatic impact on U. s. weather for several years.

现在，科学家们还有另一个系统形成太平洋的更大，并可能产生重大影响的美国天气有好几年了。

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Shear strength of the locking member is increased by specially forming the recess-engaging portion of the U-shaped packing.

剪切强度锁定成员特别是增加了形成休会，进行部分的U形包装。

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"Economics dictates that 95% of current U.S. hydrogen is produced by steam-methane re-forming of non-renewable natural gas, " Michael K. Heiman, professor of environmental studies at Dickinson College, wrote in a study of the proposed hydrogen economy last year.

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The multimedia business is expected to grow by leaps and bounds and Itochu has responded by forming a strategic alliance with Time Warner of the U.S. and undertaking forward-looking investments in such areas as CATV, satellite communications and international telecommunications.

CNN: 'We Will Focus on Profitability'