This paper provides a feasible control pattern, which improves quality of boiler feed water and effectiveness of corrosion prevention thus prolongs the period of service life.

为提高电厂锅炉给水品质，取得最好的防腐效果，延长机组使用寿命，提供了一个可行的控制方案。

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Water stability is an important quality index of aquatic feed, which exerts direct influence onthe effect and environment of aquatic breeding.

水产饲料耐水性是衡量水产饲料质量的重要指标，直接关系到养殖效果和环境。

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For maintaining the system's stable working, adding hydrazine or ammonia to feed-water and phosphate to boiler water are the common methods of adjusting water quality.

为了维持水质的稳定运行，主要采用给水加氨和加联氨以及炉水加磷酸盐等作为水质的重要调节手段。

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