请海游帮我翻译下,先谢了? the hgi indicates the ease of coal grinding and is completely related to physical properties such as hardness, fractrre and tensile strength . it determines the relative grindability or ease of pulverizing coal in comparison with an arbitrary standard ,chosen as 100 grindability . the lower the hgi, the more difficult the coal is to grind. hgi代表煤的易磨性,它完全与煤的物理性质,如硬度、破碎特征及抗拉强度相关。它决定了煤球与仲裁标准的相对易磨性,取100为易磨性,hgi越低,煁越难研磨。查看更多