magnetic mechanical oil seal
magnetic mechanical oil seal
磁性机械油封
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Trough analysing the reason of oil leakage in bearing box of induced draft fan, a new kind of mechanical magnetic oil seal is put forward to prevent oil leakage of induced draft fan.
通过对引风机常见轴承箱漏油原因的分析，提出了一种防止引风机漏油的新机械磁力油封结构。
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