The results felicitously explain that the number of introns distributed in vertebrates, Diptera and nematodes are declining sequentially. 该结果合理地解释了内含子在脊椎动物,线虫及昆虫中数量的分布呈下降趋势。
EWB software was applied felicitously in virtual simulation experiment, which can play a useful supplementary, expanded and deepened role for the real experiment. 介绍了在实验中,恰当地应用ewb软件作虚拟仿真实验,对实验可起到有益的辅助、拓展和加深作用。