短語詞組短語grinding tool material 研具材料grinding crushing material bed 料層擠壓粉磨grinding balls material 磨球材料grinding ball material 磨球材質non -grinding powdery material 不球磨粉躰材料precision grinding material 精密磨擦材料grinding material bed 料層擠壓粉磨grinding wheel bonding material 砂輪粘結料;砂輪粘結材料By Grinding Material 減磨物質 返回 grinding material