troughn.水槽;马槽;低谷;低潮
trough iron槽钢
trough flow槽状流
trough line商业周期低潮线,向斜底线,槽线
trough bend拗槽,向斜,溜槽转弯
trough belt槽带
trough crab装料槽起重绞车
trough vault凹槽拱顶
trough drier沟式干燥器, 槽式干燥器
trough angle槽角
trough truck油槽车