“death ratio of transportation accident”的概念、定义、翻译、参考文献-科学参考

单词	death ratio of transportation accident
释义	death ratio of transportation accident Encyclopedia 工学道路运输安全指标释 death ratio of transportation accident行车安全事故死亡率在一定时期内纳入统计的行车安全事故导致的死亡人数与相应指标的比值。
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