The bottom is the mezzanine with built-in water circulation system which has better thermostatic performance than air cooling system is good, improved pellet quality.
槽底为夹层，内置水冷循环系统，恒温性能比一般气冷系统好，提高了颗粒质量。
Bottom water produced by polynyas sinks to the bottom of the sea and drives the conveyor-belt like ocean circulation around the globe.
现在这座冰山浮在一个由海冰环绕的冰间湖上。海低深水就是由这种冰间湖下沉形成，推动洋流像传送带一样在全球循环。
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