人妻与黑人一区二区三区_国产婷婷色综合av蜜臀av_精品电影一区二区三区_国产美女主播一区_亚洲精品中文字幕乱码无线_精品黑人一区二区三区_jiuse九色最新地址_在线观看电影av_99久久综合_久久久精品天堂

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.