☆─────────────────────────────────────☆
kiddingyou (李寻欢没刀了) 于 (Wed Sep 21 16:38:57 2005) 提到:
ppl don't use google anymore?
from: http://www.autocenter.com/about/
overdrive
a gearset in which the output shaft turns faster than the input shaft.
Overdrive gears are used in most modern transmissions because they reduce
engine rpm and improve fuel economy. Occasionally, a separate gearbox with an
overdrive gearset is coupled to a conventional transmission.
Suggest BM to mark that webpage.
☆─────
