英语词汇“callahan, john r.”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	callahan, john r.
释义	Callahan, John R. Callahan, John R., U.S. endodontist, 1853-1918. Callahan method - a method of filling the root canals of teeth by dissolving gutta-percha cones in a chloroform-rosin medium within the root canal. Synonym(s): chloropercha method
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Callahan, John R.