产品作用：铅砂广泛应用于比重填料，防有毒射线。
Product role: Lead is widely used in the proportion of sand fill, anti-toxic rays.
因为反应堆的大火仍在燃烧，有消息称，苏联动用了军用直升机，在反应堆上空空投湿砂、铅和硼等灭火物。
As the reactor continued to burn, military helicopters reportedly flewover the site and dropped wet sand, lead and boron onto the burning reactor.
对热朗泽铅银矿矿石化学分析副样进行了人工重砂试验。
Artificial heavy concentrate tests were conducted on chemical analysis spare sample from Relangze Lead-Silver Mine.
对热朗泽铅银矿矿石化学分析副样进行了人工重砂试验。
Artificial heavy concentrate tests were conducted on chemical analysis spare sample from Relangze Lead-Silver Mine.
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