Tus lej txo tus lej suav:
Txo qhov sib piv=input ceev ÷ tso zis ceev, qhov piv ntawm cov input ceev ntawm kev sib txuas rau cov zis ceev.
Transmission ratio xam cov mis:
Planetary gearbox theem:
i=(tus naj npawb ntawm cov hniav iav sab hauv / tus naj npawb ntawm cov hniav hnub) + 1.