Hauv kev tsim vaj tsev, kev nyab xeeb yog qhov tseem ceeb tshaj plaws.Qhov ntawd yog qhov zoo tshaj plaws tempered iav los rau hauv. Ib feem ntawm cov iav kev nyab xeeb, 5-12mm tuab tempered iav yog ib qho kev xaiv ruaj khov thiab muaj zog uas muab kev tiv thaiv cua txias, thermal stress thiab cuam tshuam.Yog li ntawd, nws ...
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