caterpillarexcavatorcrawler mounted excavator履带: track; apron wheel; caterpil ...挖土机: excavator; navvy; shovelling ...覆带挖土机: crawler excavator履带式挖土机: caterpillar excavator; caterpillar-mounted excavator; crawler mounted excavator; crawler-mounted excavator; tracked excavator履带式单斗挖土机: shovel crawler下载手机词典可随时随地查词查翻译