当针盘旋出磁场、针磁力消失，铁粉落入回收仓，同时利用高压水使之冲洗更充分，从而降低尾矿品位，提高产量。
The iron powder will fall into the recycle cavity, and at the same time, wash it adequately using the high-pressured water, so that it could reduce the gangue grade and increase output.
目的观察应用改良胸腔套管针及可冲洗胸腔引流管治疗脓胸的疗效和安全性。
Objective To evaluate the curative effect and safety of modified thoracic trocar and drainage tube which can be lavaged for empyema treatment.
方法：采用回顾性分析法，分别统计钳检、刷检、冲洗及针吸活检4种不同取材方法对肺癌的检出率。
Methods: Adopt analytic approach of reviewing method, statistic the producing rate lung cancer by four different ways to draw materials including clamp check, brush check, rinse and needle aspiration.
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