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.
砂井堆载预压法作为一种简单有效的软土地基处理方法已经在工程中得到广泛的应用。
As a simple and effective method of soft ground treatments, the sand drain preloading method has been widely used in construction projects.
并通过理论分析和工程类比，对砂卵石作坝壳堆石料时的工程特性作出了评价。
Meanwhile, with theoretical analysis and project analogy, the authors evaluate the characteristics of projects taking grit and pebble as dam shell enrockment.
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