Nnukwu imewe oghere

Obere obere, mana ikike dị n'ime nwere ike ijide akụrụngwa achọrọ maka ịnya ụgbọ ala nkịtị, wee dobe ekwentị mkpanaaka, ihe ndị mmadụ nwere, ngwaọrụ nrụzi ịnyịnya ígwè, wdg.

Akwa na -asọ mmiri
Rịba ama: Akpa ịnyịnya ígwè bụ usoro ịkwa akwa, nke nwere ntakịrị mmiri ozuzo, mana enweghị ike ịgbasa ya ogologo oge, ọ nweghịkwa ike igbochi mmiri kpamkpam ma mikpuo mmiri.

Nkewa nchekwa
Akpa n'akụkụ nwere ike ijide obere ihe dịka ekwentị mkpanaaka na kaadị akụ. Akpa nwere oghere buru ibu nwere ike ijide nnukwu ihe dị ka cylinders ikuku na ngwa nrụzi ịnyịnya ígwè.