According to the need of ventilation research and practical production, the paper made careful analyses about eight ventilation plans and six standards in Pine Mine with step analysis.

This paper analyzes the reason of effects masonry of roasting furnace, and puts forward improving plan.

This paper analyzes the failures of air operated double position butterfly valve used in car type furnace, and puts forward improving plan.

This article analyzes the main reasons for vaporization inside HP ammonium carbamate pump,proposes improving plan in order to completely solve this bottlenecking problem.

Comparison and Analysis of Improvement Schemes for RDSS Positioning Technology;

The determination of analysis and improvement scheme of structure defects in pipe cold-drawing machine;

In view of the problem occurring in previous structure of fine forging die for semi-shaft gear and in the production,the paper gave a primary analysis on the fine forging proˉcess,then put forward a new improvement scheme for the construction of the die and the seˉmi-shaft gear.

Applications and improved schemes of genetic algorithms in structural optimization with discrete variables;

The reliability improved method and control technique improved scheme of fuel system of 9E gas turbine are introduced.

And then proposes an improved scheme that is anti-business fraud and that can protect the cardholder\'s PAN information from disclosing.

The Research on the Performance Management Improvement on Techonological Staff of Hunan International Engineering Consulting Corporation;

Based on analyzing the influence of the leap moment, we believe that the leap moment should be avoided, and present two ways of improvement.

The problems in the start stop logic of band screen and the tripping logic of recycle water pump are analyzed in this paper, and improvement measures are given as well.

The analysis and improvement project about the common breakdown of Y-Δreduced-voltage starter circuit;

Analysis of type HX_D1 locomotive pneumatic brake pipe rushing out and improvement project;

Combined with practical engineering,the author proposes improvement project of using slip-form devices to be separated from operating platform,analyzed this project,introduces the construction elements of slip-form system,and show by practices that it has well economic benefits and effectively solves the construction problems,which is worthy to be popularized.