A total of 16 Bryan cervical disc prosthesis were implanted. Single level disc was replaced in 12 cases while hi-level in 2 cases.是什么意思_A total of 16 Bryan cervical disc prosthesis were implanted. Single level disc was replaced in 12 cases while hi-level in 2 cases.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句