英语词汇bell and howell perforation怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	bell and howell perforation
释义	bell and howell perforation 简明释义贝尔浩型片孔网络释义 1 ?贝尔浩型片孔贝尔浩型片孔双语例句 1 Bell and Howell perforation: a film perforation shaped with flat top and bottom and curved sides. 贝尔浩型片(齿)孔：上下平行两边弯曲的胶片齿孔。
随便看	take the air line take the alarm take the alarm at take the altitude take the angle take the arm take the average take the back track take the bad with the good take the bait take the ball before the bound take the bark off sth take the beach take the bear by the tooth take the benefit take the biscuit take the bit and the buffet take the bit between one's teeth take the bit in one's teeth take the bitter with the sweet take the blame take the bloom off take the bottom take the bread out of someone's mouth take the breast

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