Kɔbere abaa wɔ hyɛn ne Po so mfiridwuma mu

Po mu nneɛma a atwa yɛn ho ahyia no a ɛyɛ den ne nkyene a wɔde petepete so kɛse no de ahwehwɛde ahorow a emu yɛ den to nneɛma a ɛko tia nsɛe no so. Kɔbere abaa (titiriw po so kɔbere, te sɛ HSn70-1), esiane tin a ɛwɔ mu nti, ɛyɛ oxide film a ɛyɛ den kɛse wɔ soro, na ɛma ɛyɛ ade a wɔpɛ sɛ wɔde yɛ po so hyɛn a wɔde tu mmirika, po mu nsu paipu, ne condenser tube nkratafa. Sɛ nhwɛso no, wɔde kɔbere HSn70-1 na ɛyɛ hyɛmma a wɔde yi mpataa bi mu afiri, na afe afe po mu nsu a ɛporɔw no yɛ 0.02mm pɛ, a ɛba fam koraa sen carbon dade a ɛyɛ mmerɛw a ɛyɛ 0.5mm, na ɛtew ɛka a wɔbɔ wɔ nsiesie ho no so kɛse.