circumoesophageal ring是什么意思 circumoesophageal ring在线中文翻译

circumoesophageal ring是什么意思，circumoesophageal ring在线翻译，circumoesophageal ring中文意思，circumoesophageal ring的中文翻译，circumoesophageal ring发音，circumoesophageal ring例句，circumoesophageal ring词组短语，circumoesophageal ring怎么翻译，单词circumoesophageal ring的意思