difference coefficient
3.The compensation coefficient R is the function of time sampling interval (△t), spatial sampling interval (△x), depth step (△τ), interval velocity (V), frequency (f), dip (φ) and approximate second-difference coefficient (B).
4.C8605-2 and Dan 9046 were two maize self-lines of the same basis source. We analysed their nice main agronomic characters and yield per plant, the results showed that C8605-2and Dan 9046 each had large difference in coefficient of correlation and coefficient of path.
5.Multiple comparison (Bon, Duncan; LSD method) among the absolute values of four standard regression coefficients showd the following results, i.e.(1) there was no significant difference between the coefficient of T and Fd(?P?>0.05);
6.There was no statistical significance between sex(P>0.05),but the concentrations of TIMP-1 were associated with ages in DM and DNF Groups,the coefficient of correlation was 0.4866(P<0.05)and 0.6229(P<0.01). There was no apparent statistical difference between the coefficient of correlations.
7.This paper generalizes the two dimensional Crank Nicholson difference scheme from constant coefficient to the condition of variable coefficient with interpolation by integral.
8.Invariable coefficient the number of times is different linear recursion sequence will transform using the sequence difference as often the coefficient inhomogeneous linear difference equation, Thus obtains one kind of computation Invariable coefficient the number of times is different linear recursion sequence special another interpretation simple method.
9.The matching of thermal expansion coefficient of vitrified bond to CBN abrasive is a very important factor,and the difference of thermal expansion coefficient between vitrified bond and CBN abrasives should be less than 5.2×10 -6/℃.
10.The result showed there was no significant difference in the DPC coefficient between the group treated with 0.5mg/m~3 of FA and the control group.

