迄今为止，齿轮泵的寿命还远远达不到设计要求，这主要是齿轮泵存在较大的径向不平衡力所致。
The service life for gear pump is much less than the desired design up to now, which is mainly caused by higher pressure imbalance.
泵的脉动运动与不平衡振动产生了结构噪声，结构噪声在频谱中清晰显示出来。
The impulse motion and the unbalanced vibration of the pump generate certain structural noise which could be significantly expressed in frequency spectrum.
IFZ型无堵塞泵螺旋式叶轮的不平衡量对泵的水力性能有重大影响。
The imbalance weight of impeller of IFZ screw non-clogging pump has great effect on hydraulic performance of pump.
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