管道duct;pipe;channel详细»
管道flue详细»
管道canal;pipeline;pipeline pipe;trunking;tubing详细»
管道canalisation;canalization;ducting;flue;pipage;pipeline;ridge runner;ridgerunner;shakt;tu;tubing详细»
管道pipeline详细»
管道channel;conduit;conduit tube;duct;pipe alley;pipe run详细»
管道pipe详细»
管道piping;ducting详细»
管道duct;gas-collecting duct;pipe;pipe culvert;pipe line;pipeleading详细»
管道canal;line;tube详细»