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polycrystalline ceramic
polycrystalline ceramics
polycrystalline copper
polycrystalline diamond
polycrystalline diamond compound bit
polycrystalline diamond wire drawing die
polycrystalline fibre
polycrystalline germainium
polycrystalline germanium
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polycrystalline diamond compound bit
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polycrystalline diamond compound bit
Definitions
[1] 多晶金刚石复合钻头
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polycrystalline diamond compound bit