How to reduce generation of burnt head in small dose injection

Thtrough analysis the damage causes of coke oven end-flue wall, scientific and rational measurements are adopted to decrease the frequency of wall damaging and its repairing effectively.

According to the principles of geometrical acoustics, deduces focusing distance calculation formula when water immersion focus probe detects in ultrasonic detection, analyzes the rightness of the formula, at the same time analyzes using condition of experienced similar formula referred by relevant papers and factors affecting focusing distance errors.

This paper explicates the theory and practice about how to create peculiar photographs by zoom lens.

This paper is the discussing about the aperture-coefficients of the Zoom Lens, the formula for the calculating is: F=f/d (where.

Discussion and analysis on the modernization management for coke terminal of Tianjin Port;

Based on the process and characteristics of loading-unloading for the coke terminal of Tianjin Port, this paper analyzes the main foundations of the auto-loading technology system.

In the light of the actual situation of Tianjin Port and Coke Terminal , the essay analysised deeply the direction of the development and gave a sufficient proof and a reasonable prediction of the international and internal of the coke markets the past and future and .

Improved arithmetic of confocal probe based on time difference measurement;