选用三种颗料状物料，在四种不同倾斜度的斜管中测定了不同负压差和固体流率条件下的气体流率。
The experimental data of gas flow rate in the bed with four slant angles and three kinds of particle materials are obtained.
用饱水法、溶剂法、氦流法和压汞法测定孔隙率。
The porosities are measured by water displacement, solvent displacement, helium inflow and mercury pressure.
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