Ndị ọrụ anyị na-akwakọba igwe na-adọba ụgbọala. A kwakọbara ya stịpụ abụọ dị ka otu ngwugwu. Ntugharị ebe a na-adọba ụgbọala bụ hydraulic mbanye. Ọ nwere ike ibuli naanị sedan dị elu, enwere ike ịhazigharị elu elu. Ọ ka mma karịa okpuru ulo nwere obere uko ụlọ.
Oge nzipu: Mee-18-2022