After the beginning of ice-melting, there is uneven distribution of surface temperature of conductor with the air gap formation.

融冰开始后，随着空气间隙的产生，导线表面温度分布不均匀。

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Uneven air distribution and other problems existing in the water distribution system of the original V-type filter with ceramic tiles were analyzed.

福州西区水厂将原有的双阀滤池改造为V型滤池，重点介绍了进水系统、滤板系统、反冲洗排水系统、滤后水系统、反冲洗系统的改造。

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