["La presión de la columna de destilación翻译如下：
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user
好的，重新来一次，确保翻译准确：
精馏塔压差小
现有两座精馏塔，同样规格，一座有填料拆除，塔顶-4千帕，塔底-6千帕，另一座塔顶-5千帕，塔底-8千帕，塔底塔顶温度均差不多，大概什么原因？
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