英语词汇ballast mattress怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	ballast mattress
释义	ballast mattress 简明释义沉碴垫层网络释义 1 ?沉碴垫层 Ballast Mattress(沉碴垫层), 此释义来源于网络辞典。
随便看	binary notation system binary number binary number binary number base binary number coding binary number representation binary number binary number system binary number system binary numeral binary numerall binary numeral system binary numeration system binary numeration system binary numerical signal code binary object file binary object file format binary object format binary object program binary octal binary octal binary octal decoder binary one binary operation binary operation

英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。