The authors presented principle, process, operation, applied range and running expense of a bioslurry reactor, with an emphasis on the intensifying method.

总结了生物泥浆反应器这种高效生物修复技术的原理，工艺流程、运行方式、应用范围和运行费用，并重点介绍了其强化手段。

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The most important advantage of this system is saving energy resource and low running expense.

此采暖系统的最大优点是节约能源，运行费用小。

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And in making these calculations, Mr Malkiel plays fair: he deducts the typical running expense (one-fifth of 1%) charged by an index fund.

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We talk about the expense of just running your automobile.

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