Nhazi na ọrụ nke akara akara igwe dị mgbagwoju anya, nwere ọtụtụ ihe ndị bụ isi.Ejiri ihu akara, elastomers, akara nke abụọ, na ngwaike, nke ọ bụla nwere njirimara na ebumnuche pụrụ iche.Akụkụ ndị bụ isi nke akara igwe gụnyere: Ihu na-atụgharị (Mgbanaka isi)...
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