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"根据广播提供的洪水信息和自己所处的位置、房舍结构条件,冷静选择撤离位置,避免出现人未走水先到……"
"5月9日早上7点半,邵阳县的村村响广播的防汛信息准时在全县的农村院落响起.汛期来临,在气象预警信息发布途径中,邵阳县村村响大喇叭扮演了主角.全县3701组大喇叭及时把防汛信息传到千家万户,打通预警信息"最后一公里". 相似文献
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Using the relativistic quantum molecular dynamics model, we study the influence of multiple scattering on the result of two-pion correlation measurements. The scales of pion spatial distribution are larger at thermal freezeout than at chemical freeze-out. By varying the value of the parameter of cross section from 0 to 90mb, we find that the sizes of pion source measured by two-particle correlation functions are almost independent of the parameter of cross section. However, λ parameters are sensitive to the parameter of cross section. 相似文献
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