Pereti tiaki hea parau, pereti taha parau poro 3401900 3401901 Ngā wāhanga parau ahuwhenua
Ko ngā pereti taha parau 3401900 me 3401901 he wāhanga tiaki motuhake i hangaia mō ngā āhuatanga parau kaha. Hei wāhanga rohe matua e pā ana ki te tinana parau me te oneone, ka tāutahia ki ngā taha o te tinana parau, e mahi ana i ngā mahi matua e whā: te whakataurite i te pēhanga taha, te whakaū i te hohonutanga parau, te ārahi i te haere tika, me te tiaki i te tinana parau matua. I te wā e parau ana, ka ārai ēnei wāhanga i ngā kaha taha nui e pā ana ki te hea parau mā te piri tata ki ngā pakitara awaawa, ka ārai i ngā mīhini ahuwhenua kei peka ke i te huarahi, me te whakarite kia maeneene te mata i muri i te parau, kia kore ai he "ngau nui rawa" he "ngau ngaro" rānei.
He roa te hoahoa pereti porowhita o ngā hua e rua, ā, he rite tonu te āhua o te mata whakairi ki te piko o te hea parau kia piri ai. Ko te pito o mua he rekereke hea parau ka taea te whakakapi (te rohe herenga kakahu), e mau ana ki te huihuinga hea parau me ngā pūtu. Mā tēnei ka taea te whakakapi i tēnei wāhanga anake i muri i te kakahu, me te kore e hiahiatia te tango i te hea parau katoa, e whakaatu ana i ngā painga tiaki ōhanga o te "pereti tiaki."
Mō ngā rauemi me ngā tukanga, ka piri pono ngā hua ki ngā paerewa ahumahi (pēnei i te paerewa JB/T 7871.4), ka whiriwhiri i te maitai koranu kaha-ātete-mau (pēnei i te maitai 65Mn, te maitai boron rānei) mā te hanga wera, mā te tā tika rānei. Mā ngā tukanga maimoatanga wera whānui e whai ake nei (pēnei i te tinei me te whakamahana) ka whakarite kia eke te pakeke o te mata ki tētahi awhe e tika ana, ka whakamana i te pakeke teitei hei ātete i te pakū mai i te onepu me te kirikiri i roto i te oneone, me te pakari rawaka hei tū atu i ngā kawenga pānga mai i te whenua uaua, hei ārai i te pakaru.
Ko te 3401900 me te 3401901 he pereti taha maui me te taha matau e taea te whakawhiti, he pai mō ngā parau whenua me ngā parau papa pokepoke (pēnei i a Reken, Labey, me ētahi atu), ā, he maha ngā wā ka taea te whakawhiti. Ko te mata o te hua ka rongoatia ki te aukati waikura hei ārai i te taiao mahi makuku. Ko ngā taputapu mīhini ahuwhenua pēnei i ngā pereti taha parau 3401900 me te 3401901 he kōwhiringa pai hei whakarite i te tika o te parau me te whakaiti i ngā utu tiaki. Ka tiakina e rātou te huihuinga tinana parau utu nui mā te pakaru, ā, ko tō rātou ātete pakaru me te whakahaere tika i ngā āhuatanga ka whakapai ake i te pumau o te mahi me te roa o te mahi a te parau i roto i ngā āhuatanga oneone kino.
