作者报道了4例因骨质疏松压缩性骨折或肿瘤专转移性疾病行椎体成形术或后凸成形术引起迟发性化脓性脊髓炎（DPS）的病例。
The authors report on 4 cases of delayed pyogenic spondylitis (DPS) following vertebroplasty or ky-phoplasty for osteoporotic compression fractures and metastatic disease.
纯钛牙种植体因生物相容性好、质轻、强度好等而广泛应用于临床，成功的满足了患者的生理功能需求。
Titanium implants have been used widely in hospitals because of the fine biocompatibility, light weight, high strength etc. which meet successfully the patients physiologic demand.
进一步的分析表明：因控制性因素差异，边坡岩体松弛深度不同。
It is shown that the relaxation depth of rock mass at the slope is varied because of the different controlling factors.
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