圆孔

• Perforated plate with round and elongated apertures
  圆孔和长孔筛片
• Blasting compare analysis on spiral notching and circle borehole
  螺旋孔圆孔切槽爆破的对比分析
• The 3d finite element analysis of a plat with a small hole
  平板开小圆孔应力集中的三维有限元分析
• Concrete hollow floor slab for rural houses
  农房用混凝土圆孔板
• The simplification of using probe to measure the center of circle
  利用测量头测量圆孔中心操作的简化
• Finite element analysis of the stress concentration around a hole
  平板中心圆孔边应力集中的有限元分析
• Electric luminaires ; luminaire glasses with round edges of a hole
  电照明设备.带圆孔边的照明设备玻璃罩
• Numerical calculation of intensity distribution in circular aperture diffraction
  圆孔衍射光强分布的数值计算
• Propagation characteristics of planar wavediffracted by small circular aperture
  平面波经微小圆孔衍射的传输特性
• Industrial plate screens - thickness of 3mm and above - round and square holes
  工业用筛板板厚3 mm的圆孔和方孔筛板