如果发动机温度太高，活塞就会膨胀，也就不能再汽缸里运动。
If the engine temperature is too high, the pistons would expand and could not move in the cylinders.
蒸汽在汽缸中膨胀引起部分蒸汽冷凝。
The expansion of the steam in the cylinder causes some of the steam to condense.
汽缸膨胀不畅和轴封漏汽使轴系热态中心不稳定导致轴系振动。
The shafting vibration is caused by non-stability of shafting thermal state center produced by impeded casing expansion and steam leakage of the shaft gland.
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