查询词典 nitrogen-free

The results showed that nutrient ions were further absorbed and transported selectively and the harmful ions of salt were further restrained with the application of nitrogen and phosphorus. It is an effective way to increase saline tolerance and seed yield of oil sunflower by the use of nitrogen and phosphorus in the coastal mudflat of northern Jiangsu.

说明N肥和P肥的施入增强了油葵对营养离子的选择性吸收与运输，抑制了油葵对盐害离子的选择比吸收与运输，表明在苏北沿海海涂上施用肥料能够改善油葵营养状况并增强油葵耐盐性，对于增加油葵籽粒产量是一个很有效的办法。

Nitrogen narcosis is a condition of confusion or stupor resulting from increased levels of dissolved nitrogen in the blood, occurring when breathing compressed air.

当呼吸压缩的空气时，氮醉是一种各级溶解的氮在血里混乱或增加的昏迷现象发生。

Nitrification is one of the most important step is the nitrogen cycle, this series of reactions are responsible for chemoautotrophic nitrobacteria, therefore the chemoautotrophic nitrobacteria play an important role in nitrogen cycle.

摘要 硝化作用为整个氮循环的必须步骤之一，这一连串的反应主要由自营性的硝化菌负责，因此，自营性硝化菌在氮循环中扮演著关键的角色。

This paper, the experimental research on contribution of Al and RDX and high nitrogen content nitrocotton to a screw CMDB propellant, is carried out, a proper content about Al, RDX is selected in this propellant, and a problem of the propellant mechanical properties which use high nitrogen content nitrocotten is solved.

研究了Al粉、RDX及高氮量硝棉对螺压高能改性双基推进能量的贡献，配方选择了比较合适的Al粉、RDX含量，解决了采用高氮量硝棉的推进剂的力学性能问题。

Every year to 6 months we do a urinary nitrogen analysis, which is a bit more sophisticated, but it is how we determine the status of maintaining nitrogen balance.

每6月，我们进行尿氮分析，这更复杂一点，但这就是我们确定维持氮平衡状态的方法。

Effect of nitrogen rates on root-shoot balance and nitrogen accumulation and distribution in flue-cured tobacco

研究了4种密度和6个施氮水平对青贮玉米生物产量及主要农艺性状的影响。

Results After 10 days'therapy,the two groups all turned from negative nitrogen balance to positive nitrogen balance.

目的研究肠内营养和肠外营养支持对外科危重病人的治疗效果。

Based on the long-term field experiments, the relationships between soil nitrogen balance, nitrogen utilization efficiency and soil nitrate were studied.

利用长期肥料试验资料研究了土壤氮素平衡、氮肥利用率和土壤硝态氮之间的相互关系。

Due to its active and effective character,dissolved organic nitrogen plays an important role in the terrestrial nitrogen cycle.

本文就陆地生态系统DON的来源、组成、性质；森林生态系统DON的流动、季节动态以及DON在氮循环中的地位等方面作了概括和探讨。

The atmospheric phase is predominant in the global nitrogen cycle, in which nitrogen fixation and denitrification by miocroorganisms are of particular importance.

在全球氮循环中，气相是占优势的，其中，氮的固定和微生物的脱氮作用特别重要。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。