Results No bleeding,difficulty in removing the canular,unclosed fistula and pneumothorax happened.
结果所有患者无术后出血、拔管困难、瘘口不愈、气胸等并发症发生。
（等于cannular）Results No bleeding,difficulty in removing the canular,unclosed fistula and pneumothorax happened.
结果所有患者无术后出血、拔管困难、瘘口不愈、气胸等并发症发生。
It is very important to measure and control the position of bearing hole when machining canular forked shaft.
在叉头套加工过
,
承孔
置误
量和控制是十分重要。
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