selfelevating substructure

同义词释义

1)self-elevating substructure,自升式底座2)slingshot substructure,双升式底座3)elevated floor type substructure,升举式底座4)self-elevating barge,自升式平底船5)self-elevating barge,自升式平底驳6)stepped footing,阶式底座