一个色综合国产色综合,亚洲国产综合精品一区,国产一区二区三区成人欧美日韩在线观看,久久综合AV色老头免费观看

National Key Laboratory construction project - Laboratory for Safety Admitement analysis and Verification of reactive polymer materials used in coal mines

        The laboratory for safety access analysis and Verification of reactive polymer materials for coal mine is a key project of national laboratory construction officially approved by the National Development and Reform Commission. The total investment of the laboratory is 29.86 million yuan, and the construction unit is Chongqing Research Institute Co., LTD., China Coal Science & Engineering Group.At present, the laboratory has 31 sets of equipment, including 7 sets of independent research and development equipment, 13 sets of imported equipment, to meet the requirements of safety access analysis and verification in the field of reactive polymer materials used in coal mines in the next 10 years, the comprehensive capacity of the laboratory has reached the international advanced level.

 

 

无码熟妇人妻AV影音先锋| 变态 另类 欧美 大码 日韩| 中文字幕久久久久人妻| 久久精品国产亚洲77777| 小雪第一次交换又粗又大老杨| 国内精品视频一区二区三区 |