Chain hụrụ bụ abụọ ọrịa strok ike, na-eji ike, ọnwụ ngwá ọrụ kwesịrị ntị, nwere ike hụ na nkịtị ojiji nke igwe: engine bụ abụọ ọrịa strok engine, mmanụ ụgbọala ojiji maka ngwakọ mmanụ ụgbọala na mmanụ, mbuaha mmanụ ruru: abụọ ọrịa strok mmanụ ụgbọala engine mmanụ: pụrụ iche =1:50 (mmanụ mmanụ ụgbọala nkịtị: =1:25). mmanụ ụgbọala anyị...
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