Awọn marun-marunapoti cortugatedni a tun pe ni ilọpo mejiapoti cortugated, ati eto paali ti awọn ipele marun-marunCorturated apoti kaadini awọn iwe ile, iwe inu, iwe mojuto ati iwe meji idibajẹ .
Apapo Iru wọpọ: aB, CB, jẹ ati nitorinaa ni ọjọ {... Iwọn sisanra AB jẹ 7 mm, CB Creugurated jẹ 6 mm, ati pe o jẹ atunṣe jẹ 4.5 ~ 5 mm!