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1986年4月我厂大修,现有的4台主减速机和人字齿轮座全部改用螺旋密封治理漏油,使用证明效果很好。
April 1986 I plant overhaul, the existing 4 sets of main reducer and herringbone gear seat all use spiral seal to control oil spills, the use of proof is very good.