Ebiputere na 2017-10-24 1/ nkọwa ngwaahịa Diamond grit ịkpụ mmiri bụ ngwaahịa ọhụrụ, a na-ejikarị ya maka ụdị ihe siri ike na nke na-emebi emebi (silicon monocrystalline, silicon polycrystalline, germanium, gallium arsenide, gallium, indium nitride, quartz). , nkume dị oké ọnụ ahịa, ndị na-abụghị ...
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