Employed by optical microscope, scanning electron microscope, microhardness tester and X ray diffraction instrument, the isothermal decomposition process of high nitrogen austenite was investigated.
利用光学显微镜、扫描电镜、显微硬度计及X射线衍射仪分析了高氮奥氏体的等温分解过程。
2
The submitted instrument should be in a clean condition . for gas pressure calibration , the pressure medium will be nitrogen.
除特别要求外，本所将以氮作为气体压力校正的压力媒介。
3
In the determination of total nitrogen in water sample by flow injection analysis instrument, the concentration of sulfuric acid which used for the preservation of sample affected the result.