The greatest height of footwall cutting is determined through the theoretical analysis of cut-off grade method and breakeven point method.
通过对边界品位法及盈亏平衡法的理论分析，确定下盘最大切岩高度。
The softening point of these materials was determined by ring and ball method. The gardner method was used to evaluate the colorimetry and grade. The materials were characterized in detail by IR.
通过环球法和加特纳法分别测定这类物质的软化点及评定其色价、等级，并测定了这类物质的红外光谱、 紫外光谱、 荧光光谱和差热-热重变化。
From the point of view of geometry, the new method is proposed by using the concept of relational grade in grey system theory.
本文利用灰色系统理论中的关联度概念，从几何处理的角度，提出一种新方法。
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