英漢例句雙語例句Objective To observe the expression of pulmonary surfactant-associated protein D (SP-D) during human fetal lung development.目的觀察肺表麪活性物質(zhì)相關(guān)蛋白-D（SP-D）在人胚胎肺發(fā)育成熟過程中表達(dá)的特征。pulmonary surfactant protein d更多例句詞組短語短語pulmonary surfactant associated protein d 表麪活性物質(zhì)相關(guān)蛋白dpulmonary surfactant protein d更多詞組