generally three Jingyu burning oil, 1. Crankcase ventilation pipe is damaged or scattered oil and gas, 2. Valve seal damage, 3. In addition to the night or ring gap is too counterpart.
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valve seal damage
阀门密封损坏
以上为机器翻译结果，长、整句建议使用 人工翻译 。
This satisfies the requirement of protecting seal spring and also never puts damage to valve on steam turbine.
这样即满足了保护密封圈的要求又不对汽轮机阀体有伤害。
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