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4 SEC Backup pumps within the secondary loop automatically turn on.
4秒二次回路中的备用水泵自动启动。
youdao
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Thisheat energy is then transferred to a secondary loop of water.
热能然后传递给次环中的水。
youdao
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Thisheat energy is then transferred to a secondary loop of water.
热能然后传递给次环中的水。
youdao