Cov yam ntxwv tseem ceeb ntawm cov yeeb nkab ci ntsa iab: Cov yeeb nkab nrog cov phab ntsa precision, ua tiav zoo, tsis muaj cua sov kho steel oxide txheej, sab hauv phab ntsa ntawm cov hlau huv huv kom tiv taus siab, txias deformation, flaring, flattening tsis muaj kab nrib pleb, ua tau ntau yam complex deformation thiab mechanical ...
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