subloopn.副回路(子回路)subn.潜艇；替代品vi.替代vt.转包合同sub-alpine dark coniferous forest亚高山暗针叶林subdlaphragmatic blood accumulation膈下积血Suboccipitofrontal diameter of head头部枕下额径subgrade and foundation engineering地基基础subependymal giant cell astrocytoma室管膜下巨细胞性星形细胞瘤Subdermal vascular network in limbs肢体真皮下血管网subsurface flow constructed wetland潜流人工湿地substitutive compensation mechanism替代赔偿机制subsection prepare plough into work分段备投Subcutaneous tissue of external ear外耳皮下组织