This paper describes the technological process, operating conditions, production practice and technical improvement of calcine leaching in zinc circuit.
介绍了锌系统焙砂浸出的工艺流程，操作条件，生产实践及技术改进。
The recent developments of modified pitch in China are introduced. The new manufacturers for pitch, improvement for technological process as well as its variation trends of standard are reviewed.
阐述了国内改质沥青的一些最新进展；介绍了一些新的改质沥青企业、生产技术的完善情况以及改质沥青的标准变迁情况。
The process of technological innovation is one of important sources to generate trade secrets, and also the protection for trade secret can promote technical improvement.
技术创新过程是商业秘密的重要源头，商业秘密权的保护也是促进技术创新的重要手段。
应用推荐