Objective To determine the surgical point and technique of artificial mechanical valve replacement in children with heart valve diseases.
目的:探讨儿童心脏瓣膜病的人工机械瓣膜置换手术要点及方法。
Lastly, up here, is a picture of a much smaller device, this is actually an artificial heart valve that is made of plastics and metal and can replace the valve inside your heart.
最后,在上面这里,这张图片是一个相对较小的装置,这实际上是一个人工心脏瓣膜,由塑料和金属制成,可以取代人的心脏瓣膜
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