SPDTn.单刀双掷(单刀双掷的)SPabbr.自已推进的(=self-propelled)sphygmo plethysmograph博体积描记器spirographis porphyrin血绿卟啉Spirochaeta balantidis[医] 龟头炎螺旋体sphenoid electrode EEG蝶骨电极脑电图Spirochaeta gallinarum鹅包柔氏螺旋体Spontaneity aeropleura自发性气胸Spirillum metchnikovii[医] 麦奇尼科夫氏螺菌, 麦奇尼科夫氏弧菌spheroidized cementite球状渗碳体Speranskia tuberculatan.地构叶Spirogyra submajusculan.近略大水绵