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- Biological nitrogen fixation and nitrogen transfer wasdetected by 15N dilution technology. The percentage of BNF, fertilizer nitrogen andsoil nitrogen to nitrogen yield of grass and legume in monoculture and mixture wereanalyzed, respectively. 利用同位素15N稀释法测量豆科牧草固氮和转氮能力,分析生物固氮、肥料氮和土壤氮在单、混播条件下羊草和豆科牧草体内的比例,并计算生物固氮量对草地氮产量的贡献率。
- We will never yield to invaders. 我们绝不会向侵略者屈服。
- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- The town was forced to yield after a long siege. 该城受长期围困而被迫弃守。
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- These trees gave a high yield of fruit this year. 这些果树今年获得了大丰收。
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- Capacity or inclination to yield under pressure. 支持不住在压力下屈服的能力或倾向
- These apple trees yield plenty of fruit this year. 这些苹果树今年结了许多苹果。
- He was forced to yield the castle. 他被迫放弃城堡。
- He didn't yield himself to his rival. 他没有向对手屈服。
- The current yield on municipal bonds is 10%. 当前市政债券的利润是百分之十。
- In experimental plots the yield has been doubled. 在试验田里，产量已(被)提高了一倍。
- Nitrogen manuring is essential to get a good yield of cut herbage. 为了获得刈割牧草良好的产量，使用氮肥是极为重要的。
- The amount of nitrogen needed will increase as yield increases. 随着产量增加，需氮量也要增加。
- Nitrogen is the most important for high yield of rice. 氮对水稻高产最为重要。
- Will you sunder nitrogen from air? 你能从空气中把氮气分离出来吗?
- I tried every argument , but he didn't yield an inch. 我用尽各种理由想改变他的想法,但他不为所动。
- Some kinds of oyster are used as food, and others yield pearls. 有几种牡蛎可食用,有几种可产珍珠。
