By the analysis of the building surface pressure distribution,wind pressure difference coefficient and natural ventilation air circulation ratio of different house types with different operating conditions are calculated.

The variation laws of blast volume,blast pressure,recarburizing rate and silicon loss were studied during the melting process of 5 t cold blast cupola.

On principle of coal powder conveying system, the amount of carried gas and the duct configuration parameters and its optimization were analyzed on emphasis as well as the coal conveying ratio,air speed,air pressure etc.

The spring couplings are reformed and the air quantity are increased from 350～370m\+3/min to 385～405m\+3/min,exit air pressure is increased from 0.

Bases on the study of experts and scholars,this paper puts forward the path method of cross-section optimization and the optimization forecasting method of air pressure of new roads.

Coaction of wind pressure and thermal pressure in air infiltration calculation;

Experimental study of wind pressures on a low-rise full-scall building;

Numerical simulation of wind pressure on multi-span plastic greenhouse under multiple work conditions;