scoop-type dredger 耙吸式挖泥船
ejector type dredger 射流式挖泥船
di er type dredger 铲斗挖掘船
dipper r type dredger 铲斗挖掘船
scoop-type suction dredger 耙吸式挖泥船
split-type trailing suction dredger 对开耙吸挖泥船
Dredger ejector type 喷式挖泥船
Hydraulic back-hoe dredger is a new type of dredger developed and specially for handling hard soil and stone.
液压反铲挖掘船是近几年国际上新出现的一种新型挖掘作业船，专门挖掘硬质土和石块。
The utility model provides a dredger which is used for water pressure type dredging. An interface can be engaged with the sewer outlets of the various types of the closets.
本实用新型提供了一种工作于水压式疏通，接口可与各式座便器下水口相吻合的疏通器。
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