1.44 大块煤(large sized coal) 粒度大于50 mm的块煤。 1.45 中块煤(medium sized coal) 粒度介于25～50 mm之间的块煤。
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extra large-sized coal mine 特大型矿井
large-sized coal-storing silo 大型贮煤筒仓
large sized coal mine construction 大型煤矿建设
large-sized coal enterprises groups 大型煤炭企业集团
The market demand for coal has increased and coal price was stable. The market share of large and medium-sized coal enterprises was increased while their loss has decreased.
煤炭市场需求增加，煤炭价格趋稳，大中型煤炭企业市场份额增加而亏损减少。
In order to protect environment, nowadays many large and medium-sized cities in China have forbidden the use of small coal-fired boilers, which is a blow to most of bath centers.
出于环境保护要求，目前我国许多大、中城市已明令禁止使用小吨位的燃煤锅炉，这对于大多数洗浴中心来说，是一个不小的打击。
Some proposals concerning abatement of SO2 in large-sized coal-fired power plants are put forward.
最后对大型燃煤发电厂SO2的治理提出建议。
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