The surface morphology of wear scar, nanoparticles and its element distribution have been tested and analyzed by scanning electron microscope(SEM) and energy dispersive spectrometry(EDS).
使用扫描电子显微镜（SEM）和能谱分析（EDS）等观察分析磨损钢球表面的磨痕形貌、化学元素和纳米粒子形态。
Urban ground surface has an important effect on the energy exchange between air and land, which leads to an inhomogeneous distribution of land surface temperature (LST).
城市下垫面对地表能量交换的影响巨大，引起地表温度分布的不均一性。
In addition, the surface topography and element distribution were analyzed by Scanning electrical microscope (SEM) and Energy dispersive X-ray analysis (EDS) as well.
同时采用SEM和EDS对磨斑表面形貌和元素的面分布进了研究。
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