单词	包铜的
释义	包铜的copper-clad
随便看	backward pointer backward polyphase sort backward position backward probability backward process backward processing backward production system backward progression lap winding backward progression winding backward propagation ionospheric scatter backward pruning procedure backward ray cone backward reachability backward reaction backward read backward reading backward reasoning backward recovery backward recovery time backward reference backward referencing backward robot problem solving system backward roll backward-rotating field backward-rotating wave