Now we're not dealing with C and C arrays but also want to use string offsets so we need a function to calculate a numeric value, a hash, for each key.
现在我们处理的不是C语言和它的数组，我们想用字符串偏移量，所以我们需要一个哈希函数，为每个键值计算出一个数值。
Using C-G expression engineering method to calculate the penetrating depth of fragment, which is proved to be effective.
提出利用C-G公式估算侵彻深度的实用计算方法，并且得到了很好的试验验证。
Formulas to calculate load capacity of brick walls with R. C. tie columns and some feasible aseismic measures for strengthening are suggested.
提出了构造柱墙体的承载能力计算公式及合理的抗震构造措施。
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