In this article, the cutting mechanism of straightening-cutting machine has been analysed and continuous cutting constraint conditions has been presented and this made parameter of cutting mechanism optimized.

By the compared experiment for the cutting performances, it can be seen that the performances of this composite material is better than which of the ceramic tool material SG4 for continuously cutting quenched steel, and its wear-resisting property is litter lower tha.

By the compared experiments for cutting performance,it can be seen the performance of this nanocomposite material is better than which of the ceramic tool material SG-4 for continuously cutting hardened carbon steel and hardened carbon tool steel.

Reconstruction of digital human lumbar spinal cord based on serial sections;

By taking advantage of the high resolution of electron microscopy, the ultrastructure of the NMJ was analyzed through serial sections.

The computer program for joining serial sections of material microstructure into stereo-picture have been studied and developed in this article.

The second part of the present study is detect the micrometastasis foci in sentinel lymph node from patients with early-stage breast cancer with the varies methods,such as serial section with H&E staining,immunohistochemistry staining,RT-PCR and flow cytometry and to establish a suitable protocol on the pathologic evaluation of sentinel lymph nodes postoperatively in our own institute.

The key structural parameters include the deformation ductility of shear connectors as well as the degrees of shear connection provided at both the sagging and the hogging moment regions.

A sufficient condition was given that made multi-control loops for turbofan engine control system be stably switched through every stable control loop and continuous switching.