Ụlọ ọrụ mmepụta ihe dị elu nke siri ike na-egwupụta ihe na-ebufe ibu ibu

Concentric - Sistemụ casing Symmetric bụ nke pụrụ iche iji gwuowa ma tinye oghere n'otu oge site na ọnọdụ ala na-akwụghị ọtọ.Ntugharị ọkwọ ụgbọ ala jikọtara ya na mgbanaka na-eju afọ ma ọ bụ mgbanaka enwere ike iji ya na-eme atụmatụ isi ihu zuru oke nke na-eme ka ọnụọgụ ntinye na oghere kwụ ọtọ nke mkpọpu.Uwe mmiri na-agbapụta n'ime ya na akpụkpọ ụkwụ casing arụnyere na-enye akara dị mma na bọtịnụ nke oghere oghere, ma si otú a na-ebelata nkwụsị nke gburugburu nke oghere oghere ahụ.