Cov yam ntxwv ntawm helical zog:
1. Thaum meshing ob lub zog sab nraud, kev sib hloov tshwm sim nyob rau hauv kev coj rov qab, thaum meshing ib qho ger sab hauv nrog kev sib hloov sab nraud tshwm sim hauv tib qho kev sib hloov.
2. Kev saib xyuas yuav tsum tau ua raws li cov hniav ntawm txhua lub iav thaum meshing) iav me me nrog ib qho me me (sab nraud cuam tshuam tuaj yeem tshwm sim.
3. Feem ntauInternal Zogyog tsav los ntawm me me lub zog
4. Tso cai rau kev tsim qauv kev sib xyaw ntawm lub tshuab
Cov ntawv thov ntawm lub zog sab hauv: Planetary iavTsav tsheb ntawm kev sib piv siab ntau, clutches thiab lwm yam.