您要查找的是不是：
- A kind of new symbiotic nitrogen fixing plant -- Elaeagnus mollis Diels. 一种新的共生固氮植物 -- 翅果油树.
- A preliminary study of economic characters of mulberry planted within contour hedgerows of nitrogen fixing plants. 固氮植物篱梯埂套种桑树效益初探。
- Expound the role of the legumes-root nodule bacteria nitrogen fixing system in large development of west area of China, and put forward a constructive suggestion. 摘要对豆科植物-根瘤菌共生固氮体系在西部大开发中的作用进行了论述，并提出建设性意见。
- There was a negative correlation between the nitrogenase activities of nitrogen fixing bacteria in root and that in leaf and stem. 上述结果说明：巴西甘蔗在本地也具有一定的固氮能力；
- We also found that growth activity of the strain HWZ2 was accelerated in co cultures with two other nitrogen fixing bacteria (GWZ1 and GWZ2) isolated from the rice root. 同时发现HWZ2与水稻根系分离到的两株自生好养固氮菌GWZ1,GWZ2之间具有协同生长。
- The Cyanobacteria （blue green algae） and soil bacteria such as Azotobacter, which carry out BNF without plant involvement, are examples of free-living nitrogen fixing organisms. 兰细菌（兰绿藻类）和土壤细菌如固氮菌都是自生固氮微生物的代表，它们可以在没有植物介入下进行生物固氮。
- nitrogen fixing bacteria of symbiosis 共生固氮细菌
- associative nitrogen fixing bacteria 固氮菌
- Associated nitrogen fixing bacteria 联合固氮菌
- free-living nitrogen fixing bacteria 自生固氮菌
- Non-symbiotic nitrogen fixing bacteria 非共生固氮细菌
- aerobic nitrogen fixing bacterium 好气固氮细菌
- The man jacked up his car to fix a flat tire. 那人用千斤顶把他的汽车顶起以修理漏气的轮胎。
- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- I bought a run-down farm house and plan to fix it up. 我买了一间破败的农舍，打算整修整修。
- We needed someone to fix the tape recorder. 我们需要有人来修理录音机。
- She was fixing lunch for children. 她在为孩子们准备午饭。
- I'm having a devil of a job fixing my car. 我修我这辆汽车可费劲了。
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- I can fix up you with a used car. 我可以为你提拱一辆旧车。
