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...
我有五个学时的化学实验课, 还得申请医学院,还要工作.I've got a five - hour chem lab, plus med - school applications and work.在实验课上全班被分成了四个小组.The class was divided into four groups on the laboratory course.达斯汀: 是科学实验课.我们得做实验.Dustin: It'...
Examples of other technologies include : Cable Television ( CATV ) Services, Display Systems and Public Address Systems ( PA ).例如: 有线电视 ( CATV ) 服务 、 显示系统和公共广播系统 ( PA ) 等.The advent of HFC network infrastructure establis...