combination map关联图combinationn.结合；结合到一起的事物或人；密码combinational navigation组合导航combination interference组合干扰combination optimization组合优化combination misalignment复合误差Combinational redundancy组合冗余combination of sentences复合命题combination of resources资源整合combination tap assembly活门拌合机combination type process联合操作过程combination-deal trade进出口结合贸易