According to the experiment data of RHIC, it analyses the relationship between the impacting times, the value of settlement and the degree of compaction.

对高速液压夯实机（RHIC）的夯实效果进行试验研究，得到夯击次数与每层沉降量及压实度的关系曲线。

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And the coding arithmetic of three kinds of data compaction modes of PDF417 is expounded.

文中对PDF417的三种数据压缩模式的编码算法有较详细的阐述。

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Based on the monitoring data, the influence of the vibration on environment is analyzed and measures for preventing dynamic compaction vibration are put forward.

根据实测结果，分析了强夯振动对周围环境的影响，并建议了振动的防治措施。

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