1. Impregnation Powder metallurgy nā ʻāpana he inherently porous.ʻO ka Impregnation, i kapa ʻia ʻo ke komo ʻana, pili i ka hoʻopiha ʻana i ka hapa nui o nā pores me: plastic, resin, copper, oil, other material.ʻO ka waiho ʻana i kahi ʻāpana porous ma lalo o ke kaomi hiki ke hoʻoulu i ka leaks, akā inā ʻoe e hoʻokomo i ka ʻāpana, e ...
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