Stack gas energy restored interlock set plays an important role in FCCU in oil refinery. Long and failure free operation of it can ensure the safety run of FCCU.

烟气能量回收机组在炼油厂催化裂化装置中起着重要作用，机组是否能长周期安全平稳地运行关系到催化裂化装置的安全生产。

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The stability of dam abutment should has a direct relation to failure-free operation and security of projects, and security of downstream people's life and property as well.

坝肩岩体的稳定与否，将直接关系到工程的正常运行和安全，以及下游人民生命财产的安全。

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Their electronically commutated brushless DC motor provides virtually maintenance-free operation over time by eliminating brush maintenance and associated brush motor failure.

其电子换向直流无刷电机通过排除刷子维护和关联电机的出错，在操作过程中提供免维护操作。

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