“ballastless”的概念、定义、翻译、参考文献-科学参考

单词	ballastless
释义	ballastless Encyclopedia 工学道床结构释 ballastless有砟道床通常由具有一定粒径、级配和强度的硬质碎石堆集而成，碎石之间存在着空隙和摩擦力，使得轨道具有一定弹性的道床。
随便看	U.S.FDA USFDA U.S. Federal Aviation Administration U.S. Food and Drug Administration U.S. Government Publishing Office U.S.Government Publishing Office U-shaped U-shaped cells U-shaped curve U-shaped distribution U-shaped valley Ushihara Kyohiko Ushin Ush Rebellion USIA U.S. Information Service using allusions using light in photography using of insurance guaranty fund using the guided positioning effect of saccharide compound using warming and heat-clearing simultaneously U.S.Invasion of Nicaragua USIS U.S.Labor Party US-LTER

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