发布时间:2025-01-23 14:57:18
SCM435是日本标准(JIS G4053-2003)钢材, 国内相对应的钢材35CrMo。主要用作在高负荷下的重要构件,如车辆和发动机的传动件,重载和传动轴,大断面零件。
柜子放在室外多久通风甲醛正常 室外放置柜子甲醛挥发需要多长时间
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