列维和他的同事们用原子力显微镜和两片绝缘体（镧氧化铝和锶钛氧化物），研制出了一枚纳米晶体管。
Using an atomic force microscope and two layers of insulators (lanthanum aluminum oxide and strontium titanium oxide), Levy and his colleagues created a nanoscale transistor.
目的探讨无钛夹法处理胆囊管及胆管动脉在腹腔镜胆囊切除术中的应用。
To discuss no titanium-clip method in treating gall bladder duct and gall bladder artery in laparoscopic cholecystectomy.
目的：探讨腔内打结技术在无钛夹腹腔镜阑尾切除术中的效果。
Objective:To investigate the effect of laparoscopic appendectomy (LA) by endoscopic knotting without titanium clip.
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