1. Abin da ake yin simintin gyare-gyaren ƙarfen ruwa ana zuba shi a cikin wani rami mai siffar da ya dace da sashin, kuma bayan ya ƙarfafa, an samo wani sashi mai siffar siffar, girma da ingancin saman, wanda ake kira simintin. Manyan abubuwa guda uku: gami, yin tallan kayan kawa, zubowa da ƙarfafawa. The...
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