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US5311682A Hybrid dredge 失效
混合疏浚

Hybrid dredge
摘要:
A hybrid dredging apparatus uses a clamshell attached to a rigid boom to dig and remove material. The clamshell then deposits the material into the hopper of a positive displacement pump for discharge at low velocities and with minimal water content. Transducers are be used to determine and control the area of excavation.
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