查询词典 nitrogen

For the high nitrogen mass fraction in coal tar,the hydrodenit...

由于煤焦油的氮含量较高，要达到较好的加氢脱氮效果必须在高温、高压和低空速下进行。

The results showed that the main factors affecting the distribution of inorganic nitrogen were coastwise fresh-water runoff and biotic activities, and the former was more important. The analysis by N/P ratio showed that N was a limited factor on the primary productivity in autumn and winter, but P was in spring and summer.

结果表明，影响北海湾无机氮含量分布的主要因素是沿岸冲淡水，其次是生物活动；通过N/P值分析，表明了N为该湾秋冬季节初级生产力的限制因子，而P则为该湾春夏季节初级生产力的限制因子。

There are some characteristics in thermal test and calculation of boi ler burning these fuel s, such as the calculation of excess air coefficient for large content nitrogen. Fuel characteristic coefficient would be negative. Its necessary to convert fr o m heat content into volume content for the gas fuels calculation.

用这种燃料的锅炉，其热力试验和热力计算有若干特点，如高含氮量的气体燃料过量空气系数的算法，气体燃料特性系数出现负值，将给定燃料的热量份额换算成体积份额，试验中多个取样断面等。

Total bacterial count, total coliform group, residual chlorine and ammonia nitrogen were detected respectively.

细菌总数和总大肠菌群数测定所用水样严格按照无菌操作的基本要求进行采样。

The study adopted a way of potted plant experiment combined with assaying to investigate effect of chitosan on system of commensal nitrogen-fixation.

本研究采用盆栽实验和实验分析相结合的方法，观察壳聚糖对蚕豆共生固氮体系的影响。

Therefore, trying to use nitrogen protection or in the condition of low temperature in the process of comminution are recommended, which can provide more reliable results than that in the air.

因此，建议在植物多酚的测定过程中，尽量采用氮气保护的方式，或者在低温的环境中进行，从而使测定的结果更加接近植物内的真实含量。

First of all, the design case of complex liquid-nitrogen wash unit has been simulated and the column operation parameters have been got based on detailed analysis of design values of column and other unit.

然后，应用ASPEN PLUS软件进行该套装置的设计工况和改造工况的工艺模拟。

The effects of different carbon and nitrogen sources on the fermentation of Antrodia camphorata were studied. The optimal medium composition was confirmed by single factor test, orthogonal test, and the comparison of medium parameters. The results showed that many carbon sources could be utilized by A.

研究了以不同碳氮源配制合成的液体培养基对樟芝发酵的影响，通过单因素和正交试验并对培养基的参数进行了比较，确立了最佳的培养基条件。

Based on a systemic study of the content and composition of various series neutral nitrogen compounds in source rocks, the rules of thermal evolution and generating mechanism have been put forward.

含氮化合物的研究始于 1 9世纪初期，当时有关有机氮化合物的研究对石油有机成因理论的形成起到了重大作用。

Compositional analysis indicates that the films are composed mainly of carbon and nitrogen with N content over 50%.

成分分析显示，制备的薄膜主要由C和N两种元素组成，其中N的含量可高于50 %，且膜层均匀。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷