Circumferential cut fin anwụ

Ọnwụ okirikiri okirikiri dabara adaba maka ụlọ ọrụ injin ụgbọ mmiri na mmanụ dizel na okirikiri ịkpụ okirikiri nwere nnukwu ọla kọpa na mmetụta ọgba aghara ikuku karịa ka fin fin nwụrụ.