Ko tēhea te mea kaha, te rivet matapo parahi, te rivet matapo parahi rānei?
Ko te parahi parakore, e mōhiotia ana ko te parahi whero, he mātotoru (7.83g / cm3) ā, ko te ira rewa he 1083 nekehanga. Kāore he aukume. He pai te kawe hiko, te kawe wera, te ātete ki te waikura me te pakari.
Ko te mātotoru o te parahi (8.93g / cm3) e whakamahia ana mō te whakapuru i te rakau whāriki miihini, he ātete ki te kakahu.
He nui ake te mātotoru o te "parahi" i tō te parahi whero, ā, he mārō te "parahi" engari he pakari hoki.
Wā tuku: Pipiri-24-2021