Tapahi Taiaho Kirihou PET Roll ki te Rau

He mīhini taiaho CO2 kua whakaritea tēnei me te pane matawai galvanometer. Ka tukatukahia kia hurihia hei pepa. Ka whakamahia mō te tapahi i ngā rauemi ngāwari kore-whakarewa pērā i te kirihou PET.