Katherine and Martin Short pictured together in 2006
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The 100 greatest men’s Ashes cricketers of all time
"The beverage industry is actually a system of small, independent businesses, some of which have been in the same families for generations," a spokesman for the American Beverage Association tells the BBC. "Many produce brands that have been around for more than 100 years."
核心的瓶颈首先在于精度问题。目前技术虽然在不断进步，但在打印精细结构或大尺寸零件时，依然难以达到高精度装配所需的公差要求及优秀的表面质量要求，这直接导致了打印件难以直接作为最终功能部件使用。