Nkọwa dị mkpirikpi:

Igwe igwe igwe na-ekpo ọkụ pneumatic okpukpu abụọnakweere efere kpo oku ibughari, nchekwa ọrụ maka ịrụ ọrụ na ibipụta ngwa ngwa.Tebụl na-arụ ọrụ gosipụtara n'ụzọ zuru ezu na-eme ka ọnọdụ stampụ ọkụ ahụ bụrụ nke ziri ezi ma dị mma.Efere kpo oku emebere ya na ọkpọkọ ikuku pụrụ iche, kpo oku nke ọma.A na-emeso elu tebụl na-arụ ọrụ nke ọma.Igwe nwere ike ibipụtasublimating okpomọkụ nyefeedemede.