英语词汇certified reference coal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	certified reference coal
释义	certified reference coal 简明释义标准煤样网络释义短语 1 Certified reference-coal 标准煤样 2 power coal certified reference material 动力煤标准物质 3 certified reference-material of coal 有证煤标准物质
随便看	access protection access protection field access protocal access protocol access protocol access provider access provider access queue access railroad access railway access ramp access rate access recirculation access record access register access request access resolution access restriction access restriction enforcement access right access right assertion access right grant or deny access rights access-rights terminal access right terminal

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。