There are two kinds of addition,namely,superposition and accumulation.

This paper mainly researches white and black balls homogeneous permutation problem,an algorithm based accumulation and its simple analysis are given when any possible homogeneous permutations are analyzed under different condition,the validity of this algorithm is verified through the experiment.

Analysis and simulations show that the algorithm based on auto-correlation has higher estimation accuracy and is not sensitive to frequency offset; the algorithm based on accumulation has lower complexity of implementation and comparable estimation accuracy under low frequency offset.

In this paper,the factors which influence the high speed and accuracy CNC machining are analyzed,and a cubic spline interpolation algorithm is presented,which takes the accumulated chord as its parameter.

The cumulative impact analysis was used to find the reasons of desertification.

When the composition of mobile phase is far away from the position of the abrupt change,the multiple injection of proteins before and after starting a gradient elution for one chromatographic separation in the IEC,HIC and RPC can be performed.

Evaluation with additive index of surficial and deep ore-bearing potentials of the Laowan gold minerealized belt;