The left femoral head has irregularcontour, patchy sclerosis, and subchondral lucency, with collapse and fragmentation.
左股骨头塌陷，形态不规则，可见斑片状硬化区及软骨下透光区。
2
Cutting direction is an important factor for the efficiency of nc machining, esp. for that of irregularcontour of free surfaces which are composed of multi-surfaces.
走刀方向对数控加工的效率有重要影响，尤其对于多曲面拼接自由曲面不规则轮廓区域的数控加工。
3
Septal thickening associated with fibrosis is characteristically irregular in contour and associated with distortion of lung architecture.