激光直写机是制作衍射光学元件的关键设备，离焦检测技术是其中的重要单元技术之一。
Laser direct writing system is the key equipment for fabrication of optical diffractive elements, and the defocus detection technique is the important sub-tech in it.
利用高温高压釜设备辅以失重法、采用扫描电子显微镜（SEM）和X射线衍射（XRD）技术，研究了在动静两种状态下CO2分压对P110钢腐蚀产物膜的影响。
Influence of CO2 partial pressure on corrosion scale of P110 steel in stimulated oil field environments was investigated by using scanning electron microscopy(SEM) and x-ray diffraction(XRD).
最终采用衍射光栅单色仪作为测量光电器件光谱特性的设备。
Finally adopted a diffraction grating monochromator spectral characteristics of optoelectronic devices as measuring equipment.
使用扫描电镜（SEM）、X射线衍射（XRD）、X射线能量色散谱仪（EDAX）、显微硬度仪等设备检验了涂层的组织和性能。
The microstructure and mechanic performances of the coating were tested by SEM, XRD, EDAX, microhardness tester and other equipments.
该方法在现有衍射透镜加工设备分辨率条件下，可提高衍射透镜的衍射效率，增大衍射透镜的数值孔径。
By this way we can design high diffraction efficiency, as well as lager numerical aperture diffractive lens under current machine fabrication condition.
该方法在现有衍射透镜加工设备分辨率条件下，可提高衍射透镜的衍射效率，增大衍射透镜的数值孔径。
By this way we can design high diffraction efficiency, as well as lager numerical aperture diffractive lens under current machine fabrication condition.
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