自航开底泥驳
self-propelled split dump barge
开底驳船
garbage scow
barge with hinged bottom door
Barge
hopper
闭开-开闭形态学梯度
close-opening-open-closing morphological gradient
底开漏斗车
bottom discharge hopper car
底开门煤车
coal car with bottom door
底开门卸车
Bottom-opened Unloading Wagon