Objective: To study the expression of endothelin-1 (ET-1) in oral submucous fibrosis(OSF), so as to investigate its role in the pathogenesis of OSF.是什么意思_Objective: To study the expression of endothelin-1 (ET-1) in oral submucous fibrosis(OSF), so as to investigate its role in the pathogenesis of OSF.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句