In the traditional design and analysis, beam or thin plate is often chosen as the mechanical model for the concrete slab sleeper.
在传统的设计与计算中，为了简化问题便于工程应用，常选择“梁”、“薄板”作为宽轨枕的力学模型。
With the wide trail strategy used,the cryp-tographic security against the differential and linear cryptanalysis is ensured.
同时在设计中采用了宽轨迹策略,确保算法对差分密码分析和线性密码分析的安全性。
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