“ballast bed”的概念、定义、翻译、参考文献-科学参考

单词	ballast bed
释义	ballast bed Encyclopedia 工学[轨道部件]释 ballast bed碎石道床用散粒体碎石道砟构筑的轨下基础。
随便看	Xue Ju Xue Juexian Xuelang Ji Xuelang poetry Xuelizuan the Steed Xuelong icebreakingresearch vessel Xue Long Poler Research Vessel Xue Lundao Xue Muqiɑo Xue Neng Xuen Heonmai, Ceremony Song for Building Bamboo House Xue Qunji Xu Erchong Xue Ruolin Xueshan Xue Shanggong Xue Shanggong's Catalog of Inscriptions on Sacrificial Vessels Xueshan Shanmai Xue Shaohui Xue Shaopeng Xue Shaoqing Xuesheng Opera Troupe Xue Shepu Xue Shishi Xue Shiyu

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