A survey of newspaper articles over the past two decades shows a sharp spike in mentions of the dreaded D-word, as commentators have started to think the worst.
对过去20年来新闻报道文章的分析表明，当评论员们开始对经济状况做最坏打算时，可怕的“萧条”字眼出现频率变高。而目前的萧条指数已经是过去20年来的最高值了。
The spatial evolution of 2-D disturbances in supersonic sharp cone boundary layers was investigated by direct numerical simulation(DNS) in high order compact difference scheme.
通过直接数值模拟的方法，探讨在超音速边界层的转捩问题中，是否存在和不可压缩流情况相似的产生亚谐波的机制。
The spatial evolution of 2-D disturbances in supersonic sharp cone boundary layers was investigated by direct numerical simulation(DNS) in high order compact difference scheme.
通过直接数值模拟的方法，探讨在超音速边界层的转捩问题中，是否存在和不可压缩流情况相似的产生亚谐波的机制。
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