Method: Pollen exine ultrastructure were compared for 18 populations growing under in the same environment by means of scanning electron microscope (SEM).
方法：借助扫描电镜对栽培在同一生境下的18个半夏居群的花粉形态、大小及表面纹饰等特征进行观测比较。
Effect of martensite volume fraction on deformation dislocation structure and fracture for hot rolled dual-phase steel of the same composition was studied by using SEM and TEM.
利用SEM、TEM研究了同一成分的热轧双相钢的马氏体体积分数对形变位错结构和断口组织特征的影响。
The result of SEM analysis shows that, within the same holding time, with normalizing temperature increasing, the layer-mesostructure is denser and denser.
扫描电镜分析表明：在相同的保温时间内，随正火温度的升高， 片层状珠光体越来越密集。
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