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。
2
The sealant composition for repairing a punctured tire has an improved sealing performance and is excellent in storage stability.
所述穿孔轮胎修补材料具有改善的密封性能并且储存稳定性优异。
3
The composition of the film is studied by X ray photoelectron spectroscopy (XPS). The results show that rare earth sealing anodized film consists of cerium hy…