The incidence of fracture union without hardware removal was calculated, and the parameters that predicted success or failure were evaluated.
计算内固定物存留且骨折愈合的比率，并评价预测其治疗成败的指标。
In the present study 274 cases of IUD removal failure were examined with hysteroscopy. In 237 out of 274 IUDs fragments of IUD were detected in uterine cavity.
本文介绍274例常规取节育器困难或失败的病例，经宫腔镜检查定位，274例中有237例病人的宫内节育器或其残段碎片在宫腔内，37例未见宫内节育器。
The weld defects and thermal stress result in failure of vapour wax-removal loop-pipe used in floating roof tank.
浮顶罐蒸汽除蜡装置失效的原因是施工焊接缺陷和热应力破坏。
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