这就是所谓的筑巢或结茧.This is called nesting or cocooning.长期的行军使他的脸上结茧了.The long march had callused his feet.桑蚕取食桑叶后吐丝结茧, 然后钻出茧壳羽化为蛾.Leaves after feeding silkworm cocoon silk knot, and then drilled for the moth eclosion cocoon she...
菌根起着固氮和贮氮的作用.Mycorhizae perform the function of nitrogen fixation and storage.在生境中用带有合适菌根真菌的土壤接种.The site had been inoculated with soil containing suitable mycorrhizal fungi.大青杨VA菌根生理生态学研究.Ecological and Physiological Re...