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Particular structure electroplated diamond bit.
二合一型电镀金刚石钻头。
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Diamond bit has advantages in structural characteristics and technology.
金刚石钻头在结构特点和技术方面具有优势。
youdao
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Diamond bit has advantages in structural characteristics and technology.
金刚石钻头在结构特点和技术方面具有优势。
youdao