常见例句Objective: To extract and determine the compositions and relative amount of steride in Rhizoma Phragmitis. 摘要目的：提取并测定芦根中甾族化合物的成分和相对含量。tetracyclic sterid nuclei [医] 四环甾核sterid [医] 甾, 甾族sterid nuclei [医] 甾核 返回 steride