方法：采用透射电镜拍照及观察，高清晰彩色图像分析系统对照片的心房肌细胞特殊颗粒的体密度、数密度及颗粒平均直径进行数据处理等研究方法。
METHODS By using transmission electron, image-manipulation system techniques, the volume density, mean diameter of the granules and numerical density of the atrial specific granules were studied.
对H 13钢退火碳化物颗粒的平均直径、弥散度与硬度的关系的研究表明，在碳化物体积分数一定时，硬度是碳化物颗粒平均直径的函数，颗粒直径越大，退火硬度越低。
The relationship among the diameter and dispersity of the carbide and the hardness of the annealed H13 steel shows that when the volume of the carbide is constant, hardness is the.
用试验方法研究了固体粒子绕流园管的换热系数，得出了换热系数与固体粒子的平均直径、粒度分布、颗粒运动速度等参数的关系曲线和关系式。
By experiment, the curves and equations of relationship between the heat transfer coefficient and parameters of average diameter, particle size distribution and particle speed are obtained.
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