New coal-burning plants usually comply with the law by installing expensive equipment to filter sulfur dioxide from their emissions.

新的燃煤电厂通常安装昂贵的设备来过滤排放的二氧化硫以遵守法律。

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The emission of sulfur dioxide when high-sulfur coal is burned is restricted by law.

高硫煤燃烧过程中的二氧化硫的排放是受到法律限制的。

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The results manifested that the floatation effect of BET is better than that of other common floatation reagents and has a higher selectivity especially in high-sulfur coal sample floatation.

实验结果表明，BET的浮选效果要优于普通煤用浮选药剂，尤其是用于高硫煤的浮选时，它有很强的选择性。

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What it does have (and must have, as a starting point for the diamonds) is lots of coal: dirty, high-sulfur-content coal, which feeds 75% of the country's primary energy requirements.

FORBES: Hitting The Gas

Blankenship, making a contrarian bet that the supply of low-sulfur coal will fall even faster than demand as more eastern miners fold up shop, has bought mines in West Virginia.

FORBES: Magazine Article

Prices of low-sulfur eastern coal have remained depressed.

FORBES: Not King Coal