1) cell morphology
孔形貌
2) cell morphology
微孔形貌
1.
The cell morphology of the microcellular polypropylene(PP) foams prepared by supercritical carbon dioxide was studied.
研究了应用超临界CO2技术制备微孔聚丙烯时发泡条件和聚丙烯(PP)的熔体强度对微孔形貌的影响。
3) morphology of corrosive pore distribution
蚀孔形貌
4) keyhole profile
小孔形貌
1.
According to laser deep penetration welding existing the characteristics of keyhole,create a micron-size precise calculation model that coincidence with the keyhole profile.
根据激光深熔焊存在小孔现象的特点,利用符合小孔形貌特点的高斯旋转曲面体热源进行加载,得到了随激光工艺参数改变而变化的小孔形貌。
5) images of shot hole
击穿孔形貌
6) shaped hole
孔形
1.
Numerical simulation was carried out to investigate the flow fields for three types of shaped hole,namely,cylindrical hole,fan-shaped hole and converging-expanding hole,to reveal how the converging-expanding hole enhance the cooling effectiveness.
结果表明:圆柱形孔射流法向动量很大很集中,生成了较强的耦合涡,冷却效率最低;扇形孔减弱了射流的法向动量,并产生了一定的展向速度,冷却效率得以提高;收缩-扩张形孔减小了射流的流向厚度,增大了射流的展向宽度,且产生了更大的展向速度,扩大了射流的覆盖区域,形成了与圆形孔及扇形孔射流相比作用相反的耦合涡,使气膜更好地贴附于壁面,气膜冷却效率高于其它两种孔形的效率;相对于圆柱形孔和扇形孔,收缩-扩张形孔的平均气膜冷却效率,在吹风比为0。
参考词条
补充资料：第二孔(继发孔)型缺损
第二孔(继发孔)型缺损
ostium secondary defect
是心房间隔在形成上发生障碍，一般缺损较大，多在卵圆孔附近称第二孔(继发孔)型缺损。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。