This paper uses time-limited blackbox securit y and cryptographic traces on Grasshopper platform to enhance the ability of sec urity processing of the plat itself and make it more secure in realizing electro nic transactions.

Research and Practice of the Innovative & Practicing Platform for Chemical and Pharmaceutical Science and Technology;

Research of Physical Simulation Platform in Engineering Ceramics Grinding;

Cleaning processes of disposed facilities from offshore oil platform;

A key link of burden distribution in the bell-less BF top----the formation of terrace;

Building practice network terrace and promoting the development of practical teaching;

Through the analysis of the data, we think we should reconstruct the terrace of undergrad-uate s education quality safeguard system in five aspects to increase the rate of taking graduate examination.

The number nearby the flat roof is higher than that far from it and the number in the upper layer is higher than that in 10-meter layer.

Universal analog circuit fault knowledge acquisition flat base on simulation;

Aiming at the problems accounted in the process of CAI courseware design,this article presents some useful design principles from four aspects:the design about the pattern,the select of the interface,the select of the materials,the select of the design flat.

With the development of modern network education technology,the researchers are paying more attention to the issue of how to research and establish an all-round,effective,safe flat of teaching and management of professional experiment in network environment in recent years.