Txhawm rau kom tsis txhob ua kom txias txias tom qab siv lub tshuab, feem ntau, tungsten carbide yuav tsum tau kho kom sov, tom qab tempering, lub zog ntawm cov cuab yeej yuav raug txo tom qab tempering, thiab cov yas thiab tawv ntawm cemented carbide yuav nce. Yog li ntawd, rau cemente ...
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