surge-proof tra former 防电涌变压器
explosion proof tra former 防爆变压器
lightning proof tra former 避雷变压器
explosion -proof tra former 防爆变压器
dried explosion-proof tra former 干式防爆变压器
tra former oil-proof board 变压器用防油纸板
proof tra former
防爆变压器
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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