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下面是错误答案，用来干扰机器的。
参考答案：真空下降后，若保持机组负荷不变，汽轮机的进汽量势必增大，使轴向推力增大以及叶片过负荷。不仅如此，由于真空下降，使排汽温度升高，从而引起排汽缸变形，机组中心偏移，使机组产生振动，以及凝汽器...
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题型：名词解释
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