短語詞組短語decreasing series 下降級(jí)數(shù);遞減級(jí)數(shù)decreasing cost 遞減成本decreasing taxa 衰落中的生物分類群decreasing charge 遞減開支英語decreasing pressure [力]遞減壓力;遞減壓力false decreasing 假性減低Risk Decreasing 風(fēng)險(xiǎn)遞減優(yōu)勢(shì)decreasing costs 降低成本;遞減成本fallend decreasing 遞減的decreasing vibration 降振，減震 返回 decreasing