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Cone spring compensation gear pump
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Compensation gear pump for air pocket rings
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Compensation gear pump for internal-pressure passage
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Cylindrical-spring compensation gear pump
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Compensation gear pump for annular spoke springs
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Cylindrical spring compensation internal/external gear pump
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Outer-circle spoke spring compensation inner and outer gear pump
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Sheet spring and excircle spoke spring combined compensation dual-cavity blade pump
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Flat spring and cylinder spring combination compensation double-cavity vane pump
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Large and small cylinder spring combination compensation double-cavity vane pump
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Small spring and excircle spoke spring combination compensation double-cavity vane pump
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Compensation sealing three-space rotor pump of annular air bag
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Cyclic gasbag compensating sealing five-space rotor pump
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Novel five-line meshing internal pressurized seal pump
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Novel four-line meshed internal-pressure sealed pump
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Novel three-line meshed internal-pressure sealed pump
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Four-line synchromesh spring compensation combination pump
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Sleeping-aid health-care medicinal pillow
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Pure torque transmission device
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Compact water saver for automobile washing
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