Analysis of the particle velocity distribution and the gas-solid hydrodynamics indicate that the scale of inner particle circulation is crucial in determining the mixing pattern within the beds.
颗粒速度分布和气固流动特性分析显示，内部颗粒循环尺度是影响床内混合方式的重要因素。
2
Since the establishment of PRC, the distribution of nursing personnel has been. following the pattern of hospital beds.
建国以来，我国医院护理人员编配一直是按编制床位数而编配的。
3
The drainage pattern of the aquatic system is complex. In rocky area, the drainage of the top beds of the system makes up 59.2% of the total drainage.