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Manufacture of hydrogen storing alloy Mg2Ni
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Rubber sealed rings
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Active agent for stainless steel tungsten argon arc welding
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Bi-directional necked porous brick and block
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Body building bicycle with changeable distance between wheels
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Vertical self-priming centrifugal pump
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Backpressure cavity sealing device of vortex compressor
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Mechanism for preventing self-rotating for vortex compressor
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Anti-rotation mechanism for vortex volume-variable machine
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Valving method for low-noise axial plunger pump and valve plate structure
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Vertical centrifugal metal mould casting machine for grinding ball
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