Plectrum structure for preventing oil storage tank from overflowing
The utility model discloses a shifting piece structure for preventing an oil storage tank from overflowing, which comprises a traction rope and a shifting piece sleeved on the surface of the traction rope, connecting structures are arranged on the left side and the right side of the surface of the s...
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Hauptverfasser: | , , , |
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Format: | Patent |
Sprache: | chi ; eng |
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