A na-eji ọkpọkọ ígwè na-ebufe mmiri mmiri na ntụ ntụ siri ike, mgbanwe okpomọkụ, n'ichepụta akụkụ igwe na arịa, ọ bụ ihe akụ na ụba. Ihe owuwu ígwè na truss ígwè, ogidi na nkwado n'ibu, nwere ike ibelata ibu, chekwaa 20 ~ 40% metal, ma nwee ike ịghọta ihe owuwu mechanized na ụlọ ọrụ na-emepụta ọkpọkọ. Ngwongwo okporo ụzọ ahụ nwere ike ọ bụghị naanị ịchekwa ígwè, mee ka ihe owuwu dị mfe, ma nwee ike ibelata ebe a na-ekpuchi ya nke ukwuu, na-azọpụta ego na ụgwọ ọrụ.
Oge nzipu: Jun-02-2017
