Anyị nwere ọtụtụ ngwa ule na ihe nlele, gụnyere microscope dijitalụ, gloss mita, colorimeter, nha ihe nkiri, micrometer ime na mpụga, ejiri maka inyocha ọdịdị na nha nha nke ngwaahịa.
Oge nzipu: Nov-13-2023