grab dredger
自动推进式抓斗挖泥船 self-propelled grab dredger
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液压抓斗式挖泥船的主要生产技术指标是斗容和生产率。
The main technical index of hydraulic clamshell dredger is bucket capacity and productivity.
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抓斗式挖泥船进行超深超宽施工时，精度控制始终是难题之一。
When a clamshell dredger is used to carry out over-depth and over-width dredging, accuracy control is always one of the difficulties.
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