结果表明：罐内液体的晃动是长周期运动，并且是多阶振型的组合。
The result shows that the liquid sloshing appears as long period and combination of multi-modes.
SF 6全封闭组合电器是一种具有可靠性高，检修周期长，结构紧凑等先进技术的综合输配电装置。
SF6 totally enclosed combined electrical apparatus is an advanced comprehensive power transmission and distribution device with high reliability, long check period and well-knit structure.
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