基于回转式空气预热器受热面积灰程度与烟气侧流动阻力间的依赖关系及其相关影响因素，提出了折算压差的概念，推导了积灰监测的计算模型。
Based on the dependence of gas flow drag force on ash accumulation for rotary air heater, the converted pressure drop is proposed and ash monitoring model is derived.
积血主要在基底池、纵裂前上方和侧裂内。
These were mainly in basal cistern, cerebral longitudinal fissure and Sylvian fissure.
积血主要在基底池、纵裂前上方和侧裂内。
These were mainly in basal cistern, cerebral longitudinal fissure and Sylvian fissure.
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