Alaabta

Shabaqyada wareegyada silsiladda ah ee hal saf ah oo leh qafis ka kooban rolal-wareegyo cylindrical ah oo u dhexeeya giraan adag oo dibadda iyo gudaha ah. Xirmooyinkani waxay leeyihiin heer sare oo adag, waxay taageeri karaan culeysyada shucaaca culus waxayna ku habboon yihiin xawaaraha sare.

Giraanta dibadda ee xadhka cylindrical NJ waxa uu leeyahay laba feedhood oo go'an, halka giraanta gudaha ee xadhkaha cylindrical uu leeyahay hal feedh go'an. Tani waxay ka dhigan tahay in NJ silsilad-ku-salaysan uu awood u leeyahay inuu si tartiib ah u helo usheeda dhexe hal dhinac.