Regui雷吉regabbr.地区（=region）abbr.登记（=register）abbr.有规则的（=regular）regenerative bed demineralizer再生床净化器regenerator subcarrier circuit副载波再生电路Registration and Authorization注册和用户许可regenerating used foundry sand旧砂再生regulating economic activities调节经济活动regulating direction and speed可调控regenerative furnace pyrolysis蓄热炉裂解regenerative image intensifier再生式像增强器regulator by ferro-resonance磁铁谐振式调压器regenerative thermal converter蓄热式热交换器