A general measuring method of geometric parameters of cutting tools and the keys to ensure the system reability of measurent: binary fission in image processing and optical grating calibration are described in detailed.

A novel infrared oil content analyzer based on series of newly-developed techniques, such as fixed grating, array detectors, auto-sampling system and so on, was presented.

This paper elucidates the principle of a new small-sized railway ballast clean-ing machine s fixed riddle and determines its technical data.

The Study of the Coupled Wave Theory for Volume Phase Gratings;