Systems that can not be separated by purely mechanical means (eg crude oil), chemical separation is the remaining solution.

系统无法石油原油分离纯机械手段(如：)，化学分离是余下的解决方案。

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For the remaining of the year, Kumba foresees a downward pressure on iron ore prices due to seasonally lower crude steel production in the second half of the year.

对于今年的剩余，昆巴预计由于季节性降低粗钢产量在今年下半年对铁矿石价格的下调压力。

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Trading houses are betting on oil markets remaining over supplied for at least two more years even as crude prices stage a recovery driven by early signs of falling production.

贸易商押注油市供应过剩的情况将至少再持续两年，即使有初步迹象显示产量下滑促使原油价格回升。

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ChevronTexaco's primary projects are in Canada and Venezuela, where it thinks there are 2 trillion barrels or more worth of such "unconventional oil" reserves--an amount greater than the world's remaining reserves of conventional crude.

FORBES: On The Cover/Top Stories

The company is spending billions and hiring thousands to upgrade its remaining "northern tier" refineries in Indiana, Ohio and Washington state to handle a gush of heavy crude from Canada's tar sands.

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