The experiment researched four accelerated agents influenced to the returned fire length of the meager - lean coal.
试验研究了四种燃烧促进剂对贫瘦煤返回火焰长度的影响.
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W - boiler is applied gradually in China because of its efficiency on burning lean coal and coal.
型锅炉以其燃用 低挥发 分贫煤及无烟煤效率高而在我国电站锅炉中开始逐渐应用的.
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