Ma ke ʻano he ʻāpana koʻikoʻi o nā ʻōnaehana mechanical, nā kaulahao roller e hōʻoia i ka hana maʻemaʻe a maikaʻi o nā mīkini like ʻole.Eia nō naʻe, e like me nā mea mechanical ʻē aʻe, hiki i nā kaulahao wili ke hōʻiliʻili i ka lepo, ka lepo a me nā ʻōpala i ka manawa.Pono ka hoʻomaʻemaʻe maʻamau a me ka mālama ʻana e hoʻomaikaʻi i kāna du ...
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