Thaum lub sij hawm stranding, cov strands ntawm compacted steel hlau hlua tom qab compaction ua xws li tuag daim duab, dov los yog forging, txoj kab uas hla ntawm strands ua me me, qhov saum npoo ntawm stands smoother, thiab kev sib cuag nto ntawm cov hlau hlau tsub kom. Cov...
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