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南加利福尼亚地区铁路局计划为一项为期四年、旨在开发一种以液化天然气为燃料并采用计算机控制的机车研究计划追加拨款50万美元，从而使该研究计划的投资总额达到1000万美元。一项名为GasrailUSA的研究课题目前正在位于圣·安东尼奥的西南研究所进行，所研究的技术包括三个方
The Southern California Department of Railways plans to allocate an additional $ 500,000 for a four-year project to develop a liquefied natural gas-fueled and computer-controlled locomotive research program to bring the total investment to the research program to $ 10 million. A research project called GasrailUSA is currently being conducted at the Southwest Institute in San Antonio and the technologies studied include three parties