英语词汇layer of ballast是什么意思，layer of ballast的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典-觉斋网

单词	layer of ballast
释义	DEFINITIVE EXAMPLES 权威例句〔roadbed〕A layer of ballast directly under the ties.道碴：直接铺在枕木下的石碴美国传统
随便看	type complex type concept type control parameter block type conversion type conversion operator type conversion rule type culture type culture collection type cylinder type declaration type declaration section type definition type definition part type double precision type drum type drum printer type equivalence type extension type face type facsimile type font type fossil type fount type function type hierarchy

觉斋网英汉汉英翻译词典包含1679246条英汉翻译词条，基本涵盖了全部常用英语单词及常用语的翻译及用法，是英语学习及翻译工作的有利工具。