thread rolling
柯林斯词典
1. N the production of a screw thread by a rolling swaging process using hardened profiled rollers. Rolled threads are stronger than threads machined by a cutting tool 滚丝[engineering]
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1. N the production of a screw thread by a rolling swaging process using hardened profiled rollers. Rolled threads are stronger than threads machined by a cutting tool 滚丝[engineering]