基本上，11年前日本的一次地震之后，就关闭了一个核电站，反应堆的热度仍然难以想象的高；反应堆应该环绕大量的水用以冷却。
Basically, when a nuclear plant shuts down, as eleven in Japan did after the quake, the reactor is still incredibly hot; it is supposed to stay entirely surrounded by water, to cool it.
浑水异重流是沉淀设备中水流的基本特征，不仅存在于高浊度水沉淀池中，也存在于一般浊度水的沉淀设备中。
The density current of turbid water is the basic characteristic of the water current in sedimentation tank, in both the high turbid water and the general turbid water.
注水开发的基本规律是：注水开发早、中期含水上升速度快，采出程度低，相当多的水驱可采储量要在高含水期采出。
The basic law of injection development is the injection development at the early stage, fast water-cut rising and low recovery degree at middle stage.
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