In large interconnected power system, there have been spontaneous system oscillations at very low frequencies.
在大型电力系统中存在有自生的甚低频系统振荡。
Low effort: Set your computer's power management system at home and at work.
低工作：设置电脑的电源管理系统，在家里和在工作。
Japanese hinoki plus carbon surface makes rally at low level and back strong power.
日本桧木加碳精，使球拉攻时孤度线偏低，后劲强。
Japanese hinoki plus carbon surface makes rally at low level and back strong power.
日本桧木加碳精，使球拉攻时孤度线偏低，后劲强。
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