✔ Pūnaha whakahaere Hydraulic me te pneumatic Te ine me te mana whakahaere.
✔ Petrochemical, tiaki taiao, kōpeke hau, pūnaha braking locomotive.
✔ Ahumahi marama, miihini, miihini, miihini hanga whare, te pehanga wai totika te rapu i te tukanga ahumahi me te whakahaere, te pehanga taiwhanga.manatokonga