1. molecular sieve adsorption pump 
   分子筛吸附泵
2. molecular sieve based catalyst 
   分子筛催化剂
3. Perforated like a sieve. 
   筛状的象筛子那样穿有小孔的
4. Coronary artery bypass graft. 
   冠状动脉旁通接合
5. To make a graft. 
   进行嫁接

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• 1. 筛状皮片
  筛孔样室间隔缺损||Swiss cheese ventricular septal defect...筛状皮片||sieve skin graft...山口隧道手术||Takeuchi tunnel operation
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