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对现有ZL— 4 0、ZL— 50装载机变速泵存在的过早严重括壳现象、噪声大、可靠性差、使用寿命短等问题进行研究 ,并提出改进意见
On the existing ZL-40, ZL-50 loader variable speed pump there premature serious shell phenomenon, noise, poor reliability, short service life and other issues to study and make suggestions for improvement