ʻO ke ʻano o ke kila pōʻai lōʻihi loa, hoʻohana nui ʻia i ka ʻaila, kemika, ka lāʻau lapaʻau, ka meaʻai, ka ʻoihana māmā, nā mea hana mīkini a me nā paipu lawe ʻoihana ʻē aʻe a me nā ʻāpana hana mechanical.Eia kekahi, i ka kulou ʻana, like ka ikaika torsional, māmā ke kaumaha, no laila hoʻohana nui ʻia i ka hana ʻana i nā ʻāpana mechanical a me nā hale ʻenekinia.