There are many variations on the basic theory of co-evolution.
在联合进化的基础理论之上，衍生出了很多不同的流派。
2
The bonding and antibonding character for the CO valence level have also been studied by analysis of the variations of the molecular eigenvalues when the CO molecule approaches the surface.
通过CO分子接近表面时各分子轨道能量本征值的变化，讨论了各轨道的成键、反键特征。
3
In the prediction of lateral reservoir variations, co-Krige method is used to combine seismic inversion results and original log data to form an integrated geological model.