red a红度a值redadj.红色的n.红色reducing piece缩小接管,缩小管接头redried lamina烟叶red lizardfishn.杂斑狗母鱼reducing fluid还原性流体redbird flower红雀仙人掌Red-flag car红旗车reducing agentn.[化]还原剂reducing elbow渐缩弯管,异径弯头,异径弯管接头,变径弯头Red petrolatum红矿脂Redback spider赤背蜘蛛