[tag=CD] [lemma=gear] [□=□]
[tag=CD] [lemma=gear] [lemma=□]
[tag=CD] [lemma=gear] [tag=□]
After a startlingly abrupt clutch engagement , the GXP pulls smartly through the first two gears , but by the top of third , it starts to taper off . For this box contained some 32 gears , assembled into a mechanism that accurately reproduced the motion of the sun and the moon against the background of fixed stars , with a differential giving their relative position and hence the phases of the moon .