Cov rivets dig muag feem ntau yog ua los ntawm txhuas, thiab cov rivets dig muag teeb tuaj yeem tsim 3 lub ces kaum loj, uas tau faib rau thaj chaw loj thiab faib cov khoom thauj mus rau ntawm qhov chaw riveting. Qhov no tso cai rau cov rivets dig muag teeb siv rau ntawm cov khoom tawg lossis mos dua, nrog rau kev riveting cov qhov loj thiab tsis sib xws. Feem ntau, tsuav yog cov khoom lag luam ntawm tus neeg siv khoom tsis muaj qhov yuav tsum tau tshwj xeeb, nws tsis tas yuav ua qhov kev sim ntsev tsuag rau cov khoom siv txhuas.
Lub sijhawm tshaj tawm: Tsib Hlis-26-2022