Modification of inner bearing seal structure in centrifuge for PTA production;
PTA装置离心机内部轴承密封结构改造
The seal between the car for sintering machine and the air box;
烧结机台车与风箱的密封
Research on seals of hydraulic leg and jack for hydraulic powered support;
液压支架立柱和千斤顶密封技术研究
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