average grading_新英汉石油技术词典
average grading
[新英汉石油技术词典]
average grading平均级配，平均筛分，平均粒度组成
是什么意思，average grading的解释，average grading的翻译
[农牧林英汉词典] average grading
[水利英汉词典] average grading
[石油英汉词典] average grading
[造纸英汉词典] average grading
