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поликристаллический алмазный композит强调
油和气 poly crystalline diamond composite (MichaelBurov)
钻孔 polycrystalline diamond composite (MichaelBurov); polycrystalline diamond compact (MichaelBurov); PDC bit (MichaelBurov); poly-crystalline diamond composite (MichaelBurov); poly crystalline diamond cutter (MichaelBurov); poly-crystalline diamond compact (MichaelBurov); poly-crystalline diamond cutter bit (MichaelBurov); poly crystalline diamond cutter bit (MichaelBurov); polycrystalline diamond cutter bit (MichaelBurov); ISM cutter (MichaelBurov); ISM cutter bit (MichaelBurov); ISM bit (MichaelBurov)

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