grain diameter 颗粒直径 ; 粒径 ; 粒直径 ; 切粒模头直径
soil grain diameter accumulation curve 土壤粒径累积曲线
Mean grain diameter 平均粒径
Transmission electron microscopy (TEM) points out variable nanometric diameter grain and some small agglomerates.
透射电镜（TEM）发现多种直径不同的纳米尺度颗粒和聚集。
The casting is usually a fine grain casting with a very fine-grained outer diameter, which is resistant to atmospheric corrosion, a typical situation with pipes.
这种铸件通常为外径处晶粒非常细小的细晶粒铸件，能耐大气腐蚀，典型的情况是管子。
The zinc powders are classified as ordinary, fine and ultra-fine according to the grain diameter and spherical, lamellar and irregular according to the grain shape.
锌粉按粒径大小可分为普通锌粉、细锌粉和超细锌粉，按形状可分为球状锌粉、片状锌粉和不规则形状锌粉。
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