• 1. Gịnị bụ anwụ mgbatị mkpuchi? Azịza: N'oge na-anwụ-mgbatị mmepụta usoro, ịgba lubrication usoro ihe na thinners na uji eze mgbidi, isi elu, ebu na-anwụ-ningfe igwe esemokwu akụkụ (dị ka sliders, ejector ọcha, punches na injectionlọ ogwu ogwu) A na-akpọkarị ngwakọta dịka mkpuchi mkpuchi ọla m. 2. Gịnị bụ ọrụ nke na-anwụ mgbatị coatings? Azịza: (1) Nọgide Na-enwe ezigbo mmanu mmanu arụmọrụ na nnukwu okpomọkụ;

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  • Renault mepụtara wheel a na-ekwu okwu (nke a na-akpọ ugbu a ka ọ bụrụ wiil a na-ekwu okwu) na 1869. Ejiri ya maka ịnyịnya ígwè wee mechaa ghọọ ọgba tum tum na ụgbọala. A na-echepụta ọnụ ndị ahụ n'isi mmalite, na teknụzụ tozuru oke. Ọ nwere uru ndị a:

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