Without any experimental data and schemes, the cutting calculation of the quantity ΔD\-2 of centrifungal pumps was made on the basis of similar conversions and operational records, thus solving the problem of measuring the cutting calculations without any experimental data.

The relaxation degree control method of stringing conductor and shield wire at Yangzi river large crossover in 500 kV Ⅰ & Ⅱ shuibuya-Qianjiang lines was introduced,including relaxation degree observation,projection marking and secant calculation.

Research of segmentation algorithms of steel wire rope image based on the spatial filtering and the spatial correlation;

Multi-object segmentation algorithm based on improved snake

The morphologic filter group and watershed segmentation algorithm in the wavelet LL_n subband image were used to obtain several closed regions.

This paper explains the fulfilment of the AES algorithm,gives the result of its test,and estimates the capability of parallet operation of the algorithm by using the division of operation.