It is analyzed the current use of pyrite cinder in Chenxi County and made an in-depth discussion on the new technology for the preparation of iron concentrate powder from pyrite cinder.
针对辰溪县硫铁矿烧渣的利用现状，以硫铁矿烧渣为原料，制取铁精粉的新工艺进行探讨。
This article describes a new method for pavement repair, that is, the pavement rubblization technology, with initial discussion on the key technology.
文章介绍了一种新的修复方法——路面碎石化技术，并对该工艺的关键技术进行了初步的探讨。
Through the discussion on brass pickling processes, a new technology of super lower nitric acid is put forward to replace the conventional sulfuric acid-hydrogen peroxide process.
通过对黄铜酸洗工艺的讨论，采用了超低浓度硝酸新工艺代替硫酸-双氧水体系的老工艺。
应用推荐