In view of several problems of return loop, separator and final coal grain size in CFB boilers, the improvement measure and experience were described.

针对循环流化床锅炉的返料器、分离器和成品煤粒径等问题，介绍了国内外解决问题的经验和措施。

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It was also found the flow characteristics are not totally same between sawdust particles and rigid particles such as coal grain. Interaction between sawdust particles is much significant.

实验还发现，木屑粒子与煤粒这类刚性粒子的流动特性不完全相同，木屑粒子之间相互作用较大。

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Many shippers complain that for heavy bulk commodities traveling long distances, such as coal, chemicals, and grain, trucking is too cost1y and the rai1roads therefore have them by the throat.

许多发货人抱怨，对于长途运输的如煤炭、化工产品和粮食这样的大宗商品来说，使用卡车运输成本太高，因此铁路公司就会制约他们的发展。

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The cargoes its ships carry encompass economically sensitive commodities like iron ore, coal, grain, and steel products.

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It will be located in the King's Cross Central development, which sits on a former fish, coal and grain goods yard and spans 67 acres.

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In the business of shipping dry-bulk cargoes, mostly iron ore, coal and grain, there is not even the hint of a silver lining to the cloud.

ECONOMIST: Shipping