国产欧美在线观看不卡_久久久久亚洲av无码麻豆_吃奶揉捏奶头高潮视频在线观看_日韩av高清在线观看_成人毛片一区二区

臭氧老化試驗箱模擬和強化大氣中的臭氧條件，研究臭氧對橡膠的作用規(guī)律，快速鑒定和評價橡膠抗臭氧老化性能與抗臭氧劑防護效能的方法，進而采取有效的措施，提高橡膠制品的使用壽命。 To simulate and strengthen the ozone conditions in the atmosphere, to study the action rule of ozone on rubber, to quickly identify and evaluate the anti-ozone aging property of rubber and the protection efficiency of anti-ozone agent.Then take effective measures to improve the service life of rubber products.