The black abstract material which sticks to inside crack of the sample machined by wire-electrode cutting is analyzed and studied by using scanning electron microscope and X-ray energy spectrometer.
应用扫描电镜及X射线能谱仪等设备，对采用线切割制取的裂纹样品内表面的黑色不明物进行了分析。
2
Hardware and firmware of programmable x-by-wire device based on ARM7 and USB technology is designed.
设计了基于ARM 7微处理器和USB技术的可编程线控设备的硬件及固件。
3
In recent years a lot of papers about technique for measuring a 3-d low turbulent flow field by means of rotating a X-type hot-wire probe has been published.