短語詞組短語reduced power level 降低功率水平reduced insulation level 降級(jí)絕緣基準(zhǔn)reduced level of water 降落水位balance at a reduced level 縮減均衡level reduced 水平降低reduced to the lowest level 降到最小level is reduced 電平下降Level requirement reduced 降低等級(jí)要求 返回 reduced level