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Genotypic variation in N use efficiency depended mainly on uptake efficiency at both N levels. 随施N量增加 ,吸收效率和N效率显著下降 ,利用效率则变化不大。
The data that will be saved on the DB is: brands of the products, categories of the products( n levels), and dealers for the products. 保存在数据库中的数据是：产品的商标，产品的种类及经销商。
Erect back : Hold out a bosom haughtily to look up, your eye shot and demeanour are met because of this promotion N level. 挺直脊梁：骄傲地挺胸抬头吧，你的视野和风度都会因此而提升N个级别。
A hydroponic experiment was conducted to investigate the effect of different N levels on the growth and anti-cancer glucosinolates content of Chinese kale (Brassica alboglabra). 采用溶液培养方法，研究了不同供氮水平对芥蓝生物量及抗癌次生代谢物芥子油苷含量的影响。
The study showed: (1) In early rice, straw incorporation increased soil NH4(superscript +)-N, no matter whichever irrigation regime or N level was adopted. 结果表明：(1)上年晚稻稻草还田提高了来年早稻期间土壤NH4(上标+)-N浓度；
Although the conventional N level could supply Chinese kale enough nutrition to get high biomass product, relatively higher N level was expected to increase the content of anti-cancer glucosinolates. 但适当提高供N水平，在保证高产的同时可显著提高芥蓝菜苔的芥子油苷含量，有利于提高其抗癌品质。
SOLITARY WAVES IN AN ONE DIMENSIONAL CHAIN OF N LEVEL ATOMS 一维N能级原子链中的孤波
Business bounced back to prewar levels. 商业回升到战前的水平。
Interest rates are running at record levels. 利率达到创记录的水平。
In this period, unemployment reaches record levels. 这段时间的失业人数又达到了创纪录水平。
The ground levels off beyond those houses. 这些房子那边的地变得平坦了。
We must increase production levels. 我们必须提高生产水平。
Radiation reached unheard-of levels. 辐射作用已达到前所未有的程度。
He fought in the N African campaign during the last war. 在上次战争中他在北非战役参战。
Some freshwater fish such as pike can withstand levels of acidity. 一些诸如梭鱼等淡水鱼可以抵御相当程度的酸性。
Unemployment levels have rocketed (to new heights). 失业率猛然上升(到新的水平).
Prices keep going up to even more impossible levels. 物价不断上涨，涨到不可思议的地步。
The factory cannot maintain current levels of production. 该工厂不能保持目前的生产水平。
That will be a total of eighty N T. 那总共八十台币。
Rock-'n'-roll was started in the 1950s. 摇滚乐发源于20世纪50年代。