二者的平衡反映灰成分的催化能力，常用矿物质催化指数MCI来表示。
The balance of the both represents the ash catalytic ability. It is often shown as mineral catalytic index MCI.
热解生物质与煤共燃时的结渣、积灰和磨损特性取决于热解生物质灰分含量、灰成分，煤的灰分含量、灰成分以及混合比例等因素。
The slagging, fouling and abrasiveness performances of co-firing low-temperature pyrolyzed biomass with coal depend on the ash content, the ash component of them and their blending rate, etc.
4月15日，在冰岛东部，火山专家收集火山灰样本并送交实验室分析其成分。
Volcanic scientists collect samples of ash to send to LABS to analyze its content, in eastern Iceland on April 15.
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