这个词是什么意思？
Significant decline in economic activity spread across the economy, lasting more than a few months, normally visible in real gross domestic product, real income, employment, industrial production, and wholesale-retail sales. (National Bureau of Economic Research, Inc, www.nber.org/cycles.html, accessed 4/23/2009)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D057172 · MeSH 2026。
Courtesy of the U.S. National Library of Medicine. Annual snapshot; later updates may not be reflected. NLM does not endorse this service.