Zingathe kukwaniritsa zotsatira za kuphwanyika mbali zonse ziwiri. Ma rivets ochotsedwa amadziwika ndi mfundo yakuti pambuyo poti riveting yatha, palibe mutu wa msomali womwe umagwa, ndipo malo awiri ophwanyika a chinthucho ndi athyathyathya.
Nthawi yotumizira: Ogasiti-31-2022
