1.General introduction of free-cutting steel Free oki kila, no hoi e pili ana i ka noa-machining kila, oia ke kila kila ma ka hoʻohui o hoʻokahi a oi aku oki mea e like me ka sulfur, phosphorus, alakai, calcium, selenium a me tellurium i. hoʻomaikaʻi i kāna waiwai ʻoki.ʻoki kila manuahi i...
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