Suberu苏贝鲁subn.潜艇；替代品vi.替代vt.转包合同suberin lamella木栓质层subtomic debris亚原子碎片subent bit mask子网位掩码subdifferential次微分subsonic nozzle亚声速喷嘴,亚音速喷嘴subpolar region亚极地区subsonic combat亚音速战斗subtropics zone亚热带地区subsystem clock[计] 子系统时钟subsystem fault子系统故障