D. Gear box: 200 Involute cylinder Bevel wheel, cast alloy steel piston.
齿轮箱：200渐开线圆柱斜齿轮，铸造合金钢活塞。
Check the slide faces of the piston rings and stuffing box rings.
检查活塞环以及填料函圈的滑动面。
The problems such as overheat and blackening of the piston rod are solved by means of improving the composition of packing in the sealing box.
通过改进密封函填料配方解决了活塞杆过热发黑的问题。
The problems such as overheat and blackening of the piston rod are solved by means of improving the composition of packing in the sealing box.
通过改进密封函填料配方解决了活塞杆过热发黑的问题。
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