Crepis desertorum from the Junggar Basin of north Xinjiang, northwest China, is described as a new species. Molecular st......

探讨钛铁矿氧化过程中的物相转化、形貌改变及其氧化机理。在700~800°C时，钛铁矿(FeTiO3)转变为赤铁矿(Fe2O3)和金红石(TiO2)，当温......

Because the work environment of segment is complex, and the wear failures usually happen, the wear mechanism correspondi......