试样在高纯氮气流中用高频感应加热熔融。
The steel sample is molten by radio freguency induction heating in pure nitrogen flow.
利用普氮为原料，通过一定的特殊工艺的处理，去除普氮中的氧、水等杂质，得到高纯氮气。
Common purity nitrogen as the material, through some special technics, wipe off the oxygen and water in nitrogen, then get high purity nitrogen.
当利用高纯氮气在晶体上施加一定的压力时，晶体的分解温度随压力的提高有较大幅度的提高。
On the other hand, the decomposition temperature of the crystals increased to a rather large extent when a pressure of-4MPa was applied on them.
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