油淬火 meaning in Chinese

oil hardening
oil quenching
oil-quenching

Oil - hardened and tempered stell wire for mechanical springs
油淬火回火弹簧钢丝
Hot - rolled wire rod for quenched and tempered springs
油淬火-回火弹簧钢丝用热轧盘条
Process features characteristic of induction heat oil tempered spring wire
感应加热油淬火-回火线材特点
Steel wire for mechanical springs - part 3 : oil - hardened and tempered wire
机械弹簧用钢丝.第3部分:油淬火和回火钢丝
Oil - quenching steel
油淬火钢

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