我们县不光出煤, 而且出铁.Our country produces not only coal, but also iron.阐述了锰 硅合金 矿热炉出铁口损坏的机理.Demage mechanism of tap - hole for a ferro silico - manganese smelting furnace is described.莫莉: 哎, 谁想出铁达尼号这个名字的? 布鲁丝,是你 吗 ?Molly: Hey, ...
The casing was driven into the soft muds in the top.套管被送入软岩粉顶.The conventional casing centralizer can not meet the requirements of expandable casing.传统的套管扶正器满足不了可膨胀套管的扶正要求.We need large quantity of natural casing waste f...
Introduced the research and results of low temperature sinter horniness crockery.介绍了硬质陶器低温烧成的研究及其结果.Sinter type fastigiate - handle drills: Use for drilling and brickle material such as glass, ceramics etc.产品描述:烧结锥柄钻头: 适...