n.下降；衰減

Arab diplomats say they have already detected a falloff in American influence in their region over the past year. 阿拉伯國家的外交官們說，他們已經(jīng)發(fā)現(xiàn)美國在阿拉伯地區(qū)的影響力過去一年中出現(xiàn)了下降。

Other banks have suffered declines in deposits, with the steepest falloff at institutions beset with large losses. 其他一些銀行則出現(xiàn)下降，最嚴重的是那些遭受重大損失困擾的機構。

The position of these ground locators can be adjusted later to tweak the falloff of the shadow attenuation. 那些地面上的定位器的位置能稍后時被調整去配合陰影衰減的散開。

By adding steerable sidelobe dips and achieving high sidelobe falloff rate, the windows can be used to detect a weak signal with a strong signal nearby. 只要在視窗里加上可指定位置的附葉洼溝和達到高的附葉衰減率，此視窗就能把在強信號附近的弱信號偵察出來。