Google Patents A kind of Novel full-automatic intelligent sump dredging deviceĭownload PDF Info Publication number CN209243800U CN209243800U CN201821680646.9U CN201821680646U CN209243800U CN 209243800 U CN209243800 U CN 209243800U CN 201821680646 U CN201821680646 U CN 201821680646U CN 209243800 U CN209243800 U CN 209243800U Authority CN China Prior art keywords sump mud pump impeller control system Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents CN209243800U - A kind of Novel full-automatic intelligent sump dredging device CN209243800U - A kind of Novel full-automatic intelligent sump dredging device
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