drop height range
落差范围
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The corresponding static bed height of the biggest spout fluid operating range and the relation between bed pressure drop and spout fluid velocity were determined.
测定了不同物料最大操作区所对应的静床高及喷动流化气速与床层压降、床层空隙率分布的关系。
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