The paper introduces the method of azotobacter fertilizer by biological process and test method of bacteria.本文介绍了生物法制固氮菌肥的方法,以及菌种的检验方法.Bacterial ferritin from Azotobacter vinelandii has qualitative characteristic absorpt...
He is a terrific athlete and a brilliant jumper...他是个出色的运动员，弹跳力非常好。The athlete takes off from one leg from an inward twist.这名运动员向内转体一周单腿起跳。His admiration for the athlete did not extend to the point where he would follow ...