双吸密封环磨损过多，或叶轮损坏。
Too much wear with dual-suction seal ring or impeller damaged.
叶轮有双吸和单吸两种吸液方法。
Impeller has a single suction and double suction two suction fluid ways.
一般可分为单吸式叶轮与双吸式叶轮两种。
Generally can be divided into single suction impeller with double suction impeller two.
一般可分为单吸式叶轮与双吸式叶轮两种。
Generally can be divided into single suction impeller with double suction impeller two.
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