Nkọwa nke ngwaahịa:
Sphereric na-eme mkpọtụ na-agagharị na ndị Raber na-emepụta ma nabata ọnụ ọgụgụ buru ibu nke asymmetrical rollers. Ndị na-ebugharị ndị ahụ nwere ihe kachasị mma na ndị na-agba ịnyịnya na Wother Ins iji bulie nkesa ibu n'akụkụ ogologo. Ya mere, ha nwere ike ịnabata ọsọ dị elu, ibu dị oke egwu na otu ụzọ na ibu dị elu. A na-ebugharị ibu ahụ n'etiti ndị na-agba ọsọ na mpaghara na-eme ka axis. Sprical Rollound na-eme ihe na-akụda onwe ya - na-akwado ma nwee ike ịnabata ezighi ezi nke onye na-ekwu maka ụlọ, enwere ike ibute ya, dịka ọmụmaatụ, site na oghere oghere.
Njirimara ngwaahịa:
1.Hap Ibu - Ikike
2.low mkpọtụ
3.Long Ndụ
4.Hata ntụkwasị obi
5.low na-atụgharịgharị
Ngwa:
A na-ejikwa ihe ndị na-eme mkpọtụ na-eme ọtụtụ ihe na igwe m, igwe na-eji igwe, igwe, igwe, igwe na ụlọ ọrụ ndị ọzọ.
Hapụ Ozi Gị