The features and problems of manufacturing high nitrogen steels by the electroslag remelting method at normal atmosphericpressure and high pressure have been discussed in detail.
概述了目前高氮钢的主要制备方法，重点讨论了常压和高压电渣重熔高氮钢的特点和存在的问题；
2
Supported phosphorized molybdenum catalyst precursor was prepared by the sol-gel method, and reduced under atmosphericpressure by hydrogen nitrogen mixture for the first time.
The standard method with atmosphericpressure correction for distillation test of coking benzene products is studied. The distillation range of coking benzene products is defined.