Bọọlụ Na-agbanwe Onwe Ya
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Mgbanaka dị n'ime nwere ụzọ ịgba ọsọ abụọ, ebe mgbanaka dị n'èzí nwere okporo ụzọ ịgba ọsọ dị okirikiri nke nwere etiti curvature nke elu okirikiri dabara n'etiti etiti ahụ. Yabụ, mgbanaka dị n'ime, bọọlụ na ọnụ nwere ike gbadaa n'obere mgbanaka mpụta. Ya mere, a na-edozi ngbanwe nke njehie machining nke ogwe aka na igbe na-ebu nwere ike gbanwee na-akpaghị aka.
Enwere ike itinye ihe mkpuchi oghere dị n'ime ya na mkpuchi mkpuchi.