assorted sand and gravel_新英汉石油技术词典
assorted sand and gravel
[新英汉石油技术词典]
assorted sand and gravel筛选的砂和砾石（完井时在衬管中用的砂砾）
是什么意思，assorted sand and gravel的解释，assorted sand and gravel的翻译
[石油英汉词典] assorted sand and gravel
