The main technical index of hydraulic clamshell dredger is bucket capacity and productivity.

液压抓斗式挖泥船的主要生产技术指标是斗容和生产率。

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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。

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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。

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