perforation

From Longman Dictionary of Contemporary Englishperforationper‧fo‧ra‧tion /ˌpɜːfəˈreɪʃən $ ˌpɜːr-/ noun formal 1 [countable usually plural]HOLE a small hole in something, especially one of a line of holes made in a piece of paper so that it can be torn easily the perforations in a sheet of stamps2 [uncountable]HOLE when something makes a hole or holesExamples from the Corpusperforation• One room could be filled entirely with keyboards, which operated by punching coded perforations on to a roll of paper ribbon.• Complicated appendicitis was defined as appendicitis with histopathological evidence of perforation or gangrenous change.• In no patient was there evidence of perforation, even in those in whom bile collections were found.• An attempt to visualise the proximal bile ducts resulted in a small perforation.• When the stereo sends audio signals to the electrodes in the speaker, sound comes out of the perforations.• These curious drum-shaped clay objects characteristically have two perforations on one side and two or three stalks rising from the top.• Today she is in Pennsylvania Hospital with perforation of her stomach.

单词	perforation
释义	perforation From Longman Dictionary of Contemporary Englishperforationper‧fo‧ra‧tion /ˌpɜːfəˈreɪʃən $ ˌpɜːr-/ noun formal 1 [countable usually plural]HOLE a small hole in something, especially one of a line of holes made in a piece of paper so that it can be torn easily the perforations in a sheet of stamps2 [uncountable]HOLE when something makes a hole or holesExamples from the Corpusperforation• One room could be filled entirely with keyboards, which operated by punching coded perforations on to a roll of paper ribbon.• Complicated appendicitis was defined as appendicitis with histopathological evidence of perforation or gangrenous change.• In no patient was there evidence of perforation, even in those in whom bile collections were found.• An attempt to visualise the proximal bile ducts resulted in a small perforation.• When the stereo sends audio signals to the electrodes in the speaker, sound comes out of the perforations.• These curious drum-shaped clay objects characteristically have two perforations on one side and two or three stalks rising from the top.• Today she is in Pennsylvania Hospital with perforation of her stomach.
随便看	entanglement Entebbe entendre Entenmann's Entenmanns entent entente Entente Cordiale enter enter a plea enter an occupation enter forge an alliance enter form an alliance enter into enter into enter into a profession enter into an alliance enter into discussions enter into discussions with enter into discussions/negotiations (with somebody) enter into negotiations enter into negotiations with enter into something enter into the spirit enter into the spirit of