Mwepụta bọtịnụ abụọ na-apịaji Walker nwere oche mpịaji & 4

Nkọwa dị mkpirikpi:

Aluminom alloy

Ibu ibu

Inwention

Mee ka obi sie gị ike

Enwere ike ihichapụ

Nkà na ụzụ


Nkọwa ngwaahịa

Mkpado ngwaahịa

Mwepụta bọtịnụ abụọ na-apịaji Walker nwere oche mpịaji & 4

 

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