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。
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.
在这里，气速对应到一个马赫数之一，指该流速等于当地音速的，特别是天然气。
Here the gas velocity corresponds to a Mach number of one, denoting that the flow velocity is equal to the local speed of sound of the particular gas.
1974年真空行业会议确定四大攻关项目之一是油增压泵对应高吸入压强提高抽速。
One of the 4 items decided at the vacuum trade meeting in 1974 was to raise the pumping speed of oil booster pump following the raise of sucking pressure.
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