subtien.副系杆subn.潜艇；替代品vi.替代vt.转包合同subsurface growth液面下生长Subsect. Laevian.光皮亚组Subgenus Furcatumn.叉状亚属subsonic accident亚音速飞行事故subsector library分部门贷款substratificationn.二次分层化submaillary gland下颌腺subsystem control[计] 子系统控制Submucosal lesion粘膜下病变substracting unit减法装置