Ihe dị iche iche na-emetụta ogologo ndụ nke kreenụ ọkara-gantry, gụnyere nhazi crane, usoro ojiji, omume mmezi, na gburugburu ebe arụ ọrụ. N'ozuzu, crane ọkara-gantry a na-elekọta nke ọma nwere ike ịnwe ogologo ndụ site na afọ 20 ruo 30 ma ọ bụ karịa, d ...
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