Almost as much time may be consumed in reducing the final 6% moisture as is required to bring the moisture content of 80% down to 6%.

要除去最后6%水分所花费的时间几乎与水分从80%降到6%所需要的时间相同。

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Therefore, some measures, such as laing down appropriate technology starting form reducing the moisture content and improving the cleanliness, have to be taken and controlled strictly.

为此，必须从降低含水量和提高清洁度着手，制订合适的工艺并严格控制。

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