中间齿轮衬套 intermediate gear bushing ; e gear bushing ; idler gear bushing
中间小钢轮衬套 intermediate crown wheel ring
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该类型泵特别适合于低比重介质的工况， 在这种情况下背对背的设计及中间衬套可以产生自然的轴向平衡和附加的轴支撑。
They are particularly suited to low specific gravity applications where the back-to-back design and center bush provide natural axial balance and additional shaft support.
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