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材質:20CrNi2Mo硬度:58-62 HRC精度:AGMA 12Material:20CrNi2MoHardness:58-62 HRCPrecision:AGMA 12
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材質:18CrNiMo7-6硬度:58-62 HRC技術難點:對齒精度Material:18CrNiMo7-6Hardness:58-62 HRCTechnical difficulties:Alignment accuracy of tooth to tooth