球形孔泡沫铝合金力学性能高于多边形孔泡沫铝合金及泡沫纯铝，因而其三明治梁的力学性能最好。
It is concluded that the sandwich beams with core of spherical pore Al alloy foam is excellent for more good mechanics property.
分析了多边形车轮在板式轨道下对直线电机车辆动力学性能的影响。
This thesis develops a coupling dynamics model for LIM vehicle and slab track to investigate the influence of polygonal wheels on dynamic behavior.
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