查询词典 nitrogen-free

Nitrogen is often used instead of air because nitrogen is noncorrosive.

通常，气压设备中使用的是氮气而不是空气，因为氮气没有腐蚀性。

The calculated results show that there is an obvious difference between the interfacial tension of the bulk liquid nitrogen and that of the adsorbed liquid nitrogen film on most of nonporous so.

根据表面热力学原理，本文导出从无孔固体吸附氮气的等温线计算其表面上吸附生成的液氮膜界面张力方程式；还导出计算固体中圆筒形间隙孔径方程式。

Grandis×E. urophylla. The results also showed that the chlorophyll content of leaves in eucalyptus seedlings increased with the concentration of nitrogen, but it showed a decreasing tendency in overhigh nitrogen concentration.

桉树叶片的叶绿素含量随着氮素处理浓度的升高而升高；但是过高的氮素处理，叶绿素含量则出现下降的趋势。

Other compounds include the nitrides, exceptionally hard materials made from nitrogen and a metal; cyanides; azides, used in detonators and percussion cap s; and thousands of organic compounds containing nitrogen in functional groups or in a linear or ring structure.

其它的化合物包括氮化物，是由氮和金属生成的异常坚硬的材料；氰化物；叠氮化物，用作引爆剂和雷管；还有数千种含氮的有机化合物，以功能团或者线性或环状结构的形式存在。

HPLC method of determination of CCU has been developed for the kinetic study. The kinetics of photodecomposition of CCU in various carrier gases have been studied. The photoreaction of CCU in nitrogen and air is of the first order, while in oxygen is closer to that of the second order. The rate constants in nitrogen, air and oxygen are 0.00703/h, 0.0109/hand 0.00445 , and the half-livies are 98. 6, 63. 6 and 62. 7hour respectively.

采用以甲醇一水为流动相的反相HPLC作为分析手段，对灭幼脲在不同载气中的光解动力学作了研究，结果表明，灭幼脲在氮气和空气中的光解反应符合一级动力学形式，而在氧气中的光解则更接近于二级反应形式；在三种气氛中的反应速度常数分别为0.00703h〓，0.00109h〓和0.00445h〓〓，半衰期相应为98.6、63.6及62.7h。

In the whole growth period, the genotype of high nitrogen use efficiency had low photorespiratory rate and the ratio of photorespiration to photosynthesis, while low nitrogen use efficiency had high photorespiratory rate and the ratio of photorespiration to photosynthesis.

从整个生育期看，氮利用效率高的水稻光呼吸速率较低，其相对光呼吸较小；氮利用效率低的水稻光呼吸速率较高，其相对光呼吸较大。

Effects of tillage systems and nitrogen applied amount on wheat growth and development and yield of wheat and maize 3.1 Effects of tillage systems and nitrogen applied amount on wheat growth and development In the second year of experiment, there was no significant difference in the wheat flag leaf photosynthesis rate, flag leaf senescence characteristics, photosynthate transferring amount, photosynthate transferring ratio and dry matter accumulation of between R, H and C.

3耕作模式与施氮量对小麦、玉米生长发育及产量的影响 3.1耕作模式与施氮量对小麦生长发育的影响在试验第二年，旋耕和耙耕模式在旗叶光合速率、旗叶衰老特性和光合产物转移量和转移率，以及干物质积累量上与常规耕作模式无显著差异。

The little taste of soy depends on the discretion of content of nitrogen of amino acid phthalein, generally speaking nitrogen of amino acid phthalein is taller, the order and degree of soy is higher, that is to say quality is better.

酱油的鲜味取决于氨基酸酞氮含量的高低，一般来说氨基酸酞氮越高，酱油的等级就越高，也就是说品质越好。

Besides, the traditional Steam Pressurizer was used widely in the world nowadays, there are so few papers about the Nitrogen Pressurizer. In this paper the mathematical model and dynamic characteristics simulation of the Nitrogen Pressurizer have been built to create a good environment for Integrated reactor research .

由于国内外以往较多采用的是蒸汽式稳压器，有关氮气稳压器的文章较少见，本论文中所研究的氮气稳压器的数学模型和动态特性仿真，为今后一体化反应堆的研究奠定了良好的基础。

Nitrogen is mainly present in organic forms in soils even though most plants absorb inorganic nitrogen, which accounts proximately 1% of total N in soils.

土壤氮库中的氮主要以有机氮的形式存在，无机氮仅占土壤总氮的1%，而植物所吸收的氮几乎都是无机形式。

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。