ogwe aka hama kwụsiri ike na Hitachi 490
Lee ihe ndị ọzọ
Ezigbo ike na ntachi obi
N'inwe imewe ihe owuwu ọhụrụ, ike dị elu, nkwụsi ike dị mma, na ndụ ogologo oge ọrụ, ngwa a na-enye mgbochi ka mma n'oge a na-egweri ihe, na-eme ka arụmọrụ ngweri ihe dịkwuo elu site na ihe dị ka 10% ruo 30%; ogwe aka hama ya na-enye nchebe maka onye na-agbaji ihe, na-ebelata ọnụego ọdịda na ugboro ole nke mgbawa mkpanaka chisel, ebe ọ na-ebelata ịma jijiji iji nye ahụmịhe ngweri ihe kacha mma.