基生叶长圆形或椭圆形，截形或楔形在基部。
Basal leaf blade oblong or elliptic, truncate or cuneate at base.
结果表明：在直槽或螺旋槽、零前角或正前角等情况下，用本文设计的磨轮铲磨的滚刀，其基本蜗杆轴截形在从新到旧的整个使用过程中都是精确的。
The following conclusion is obtained. In the cases of straight gash, spiral gash, zero rake angle and positive rake angle, the hob worm profile from hob put into use to hob abandoned i…
方法采用V形或经椎弓根椎体截骨术、椎体部分或整体切除术治疗脊柱后凸畸形2 6例。
Methods Various operation types were used to treat 26 cases of kyphosis respectively, including V shaped or transpedicle spinal osteotomy, subtotal or total spinal osteotomy.
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