Xov xwm kev lag luam
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Cov khoom siv steel phaj
Lub sawb hlau yog raug rau qhov txias txias-bending deformation los tsim Z-puab, U-puab lossis lwm yam zoo li hauv seem, uas tuaj yeem txuas rau ib leeg los ntawm kev xauv rau lub hauv paus daim hlau.Steel sheet pawg ua los ntawm dov txias-tsim yog cov khoom tseem ceeb ntawm txias-daim ntawv ...Nyeem ntxiv
