A new experimental design for testing MLL of lens by a single slit is studied,an d then the experimental device and program flow chart of this method are put for ward.

According to Fresnel-Kirchhoff diffraction formula,it gets the light intensity distribution formula about single slit Fresnel diffraction.

For the sake of diminishing the error to the lowest level,the smoothing matehod of five points is used to deal with the data of the light intensity distribution of single slit diffraction.

A single slit diffraction approach for measuring metal linear expansion coefficient;

Measuring the expansion coefficient of metal using single slit diffraction;

Extended experiment on single slit diffraction instrument;

Experimental research and numerical simulation on microwave single-slit diffraction;

Research of the auto-measurement system for the single-slit diffraction;

By applying advanced technology, we improve the traditional single-slit diffraction experiment.

New method on the elastic properties of stitched composites——Flow field model Ⅰ: Elastic constants calculation of the stitched laminar;

Based on the idea of calculating elastic properties of the stitched laminar,a flow field model is set up to calculate the elastic properties of each laminar for the elastic properties of stitched laminates.

The tearing mechanism of woven fabrics is analyzed and the tear strengths of six fabrics are measured by using the single rip method.

Three-dimensional spherical reinforced preforms by means of one-side-sewing technology;