C80 high performance concrete was developed in the construction of Hetai Building based on the analysis to the function of fly ash in C80 high performance concrete.
本文通过粉煤灰在C80高性能砼中的作用分析，在和泰大厦工程中配制出C80高性能粉煤灰砼。
The application of technology for gold purification by extraction is introduced with gold Refinery of Hetai gold Mine. The process flow and technology number is studied.
介绍了萃取法精炼黄金技术在河台金矿黄金精炼厂的应用情况，并对其工艺流程和技术参数进行探讨。
The application of technology for gold purification by extraction is introduced with gold Refinery of Hetai gold Mine. The process flow and technology number is studied.
介绍了萃取法精炼黄金技术在河台金矿黄金精炼厂的应用情况，并对其工艺流程和技术参数进行探讨。
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