粒徑；顆粒直徑
The results show that the concentration of coal dust is inversely proportional to the diameter of particles.
研究表明顆粒的起塵濃度與顆粒直徑成反比。
The granularity distribution and average diameter of particles of red phosphorus smoke were tested and the integral curve of typical sample were given.
測試了紅磷煙幕的粒度分布及平均直徑，給出了典型樣品的累積曲線。
Fe-Ni nano-alloy was synthesized by chemical reduction, and the result of transmission electron microscopy(TEM) shows that the diameter of particles is very small.
采用液相還原法制得鐵鎳納米合金，TEM測試結果表明該合金粒徑小。
The faster the cooling rate and the shorter the time to reach the precipitation amount peak value, the smaller are the precipitation amount and the mean diameter of particles.
隨着冷卻速率的提高，達到析出量峰值的時間越短，析出量和析出粒子的平均直徑均減小。
The experiments were carried on the synthesized ***ster-based magnetic fluids to characterize their saturation magnetization, density, viscosity, stability and the diameter of particles.
并對制得的二酯基磁性液體飽和磁化強度、密度、粘度、穩定性和粒子直徑等性能參數進行表征實驗。
|grainsize;粒徑；顆粒直徑
"直徑（diameter of particles）"是描述顆粒物質尺寸的核心參數，指通過顆粒中心且兩端位于顆粒表面的直線距離。在材料科學、地質學和環境工程等領域，該參數對理解顆粒行為、優化工業流程及評估環境污染具有重要意義。
“diameter of particles”（顆粒直徑）是描述顆粒大小的關鍵參數，通常指單個顆粒的直線寬度或通過特定方法定義的等效直徑。以下是詳細解釋：
若需進一步了解具體測量技術或行業标準，可提供更具體的應用場景以便補充說明。
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