劍橋詞典

a system or machine , for example a bicycle , that uses effort over a short distance to move a load through a longer distance
距離倍增器（通過近距離的作用實現(xiàn)負(fù)荷遠(yuǎn)距離移動的機(jī)器或系統(tǒng)）
比較
force multiplier 返回 distance multiplier