An Asian surge in high-speed trains and rising US freight locomotive demand have helped create boom conditions in the once-moribund railway supply industry, new research has shown. 一項新研究顯示,亞洲高速火車(chē)的急劇增多和美國對貨運機車(chē)需求的日益上升,已幫助一度瀕臨絕境的鐵路供應行業(yè)開(kāi)創(chuàng )了繁榮局面。