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从长远的观点来看,如果一项较好的产品能使铁路得益,那末铁路是否应为此付出较高的初期成本呢?扩大使用热拌沥青(HMA)来稳定轨道,取决于对这个老问题的回答。
In the long run, if a better product benefits the railroad, should the railroads pay a higher initial cost? Expanding the use of hot mix asphalt (HMA) to stabilize the orbit depends on this The answer to the old question.