变压器油是变压器内部重要的液体绝缘介质，起绝缘、冷却和消弧的作用。
The transformer oil is an important liquid dielectric material in the transformer; it plays the roles of insulation, cooling and extinction of arc.
变压器油是变压器内部重要的液体绝缘介质，起绝缘、冷却和消弧的作用。
The transformer oil is an important liquid dielectric material in the transformer; it plays the roles of insulation, cooling and extinction of arc.
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