Through deep analysis, we also got direct expression of calculation formula for each general tensor impedance element, showing a clear physical meaning.
通过深入分析，还得到了每个通用张量阻抗元素计算公式的直观表达式，显示出明确的物理意义。
In this paper a right formula of laterad stress was derived by the direct method, and at same time a formula of the vertical strain for calculation was also derived.
本文用直接法导出侧向应力的正确公式，同时还导出了竖向应变的计算公式。
A general mathematical formula for calculating the size composition of grinding medium which is simple and practical and can be used in direct calculation and further optimization study is described.
介绍了一种简单实用、可用于直接计算和进一步优化研究的磨矿介质配比计算数学通式。
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