Tools operating under heavy blows, e. g. upsetting dies for cold-heading of bolts, must not be through-hardened.
工具在重的打击之下操作，举例来说令人生气一钢模为门闩的感冒-标题，不能穿越是-变硬。
Tools operating under heavy blows, e. g. upsetting dies for cold-heading of bolts, must not be through-hardened.
工具在重的打击之下操作，举例来说令人生气一钢模为门闩的感冒-标题，不能穿越是-变硬。
应用推荐