土方发掘可用任何发掘机举行,如单斗发掘机、拉铲发掘机、蛤壳式挖泥机、起重机和铲运机等。
Excavation may be done by any of several excavators, such as shovels, draglines, clamshells, cranes, and scrapers.
土方发掘可用任何发掘机举行,如单斗发掘机、拉铲发掘机、蛤壳式挖泥机、起重机和铲运机等。
Excavation may be done by any of several excavators, such as shovels, draglines, clamshells, cranes, and scrapers.
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