Nkọwa ngwaahịa
Y83 usoro kwụ ọtọ okpukpu abụọ isi cylinder aki pịa nwere ike hazie iberibe, gụnyere ọla kọpa, nchara, aluminom, odo odo na ọla. Ke adianade do, ọ nwekwara ike hazie ngwakọta nke egweri slurry na metal iberibe.
Ọrụ ịntanetị 24 awa kwa ụbọchị, ka ị nwee afọ ojuju bụ nchụso anyị.