Graph RaugBelon Worm yog ib tug shank muaj tsawg kawg ib tus hniav tas nrho (xov) nyob ib ncig ntawm cov cab yog ib lub iaviavKhub yog siv los xa cov lus tsa suab nruab nrab ntawm ob lub sharafts uas yog ntawm 90 ° rau txhua lwm yam thiab pw saum dav hlau.
Cab iav koob daim ntawv thov:
Revenucers ceev,Antireversing iav li ua rau feem ntau ntawm nws tus kheej lub xauv cov cuab yeej, tshuab cov cuab yeej, cov pob zeb saw, hluav taws xob tsim hluav taws xob thiab lwm yam