查询词典 ammonia

The results of expanding treatment and colour fixation treatment show that the concentration of expanding solvent including benzenne and ammonia decreased by distill water can reduce the damage to the nacreous layers of pearls, especially for loose layers of pearl samples.

在对珍珠染色的膨化处理和固色处理中发现，使用蒸馏水降低膨化剂中苯和氨水的浓度，可以降低化学试剂对珍珠层的破坏，对珍珠层质地较疏松的珍珠尤为有效。

The parameters in natural gas advanced reburning zone that influence the efficiency of de-NOx were studied in detail considering the injection amount of natural gas, initial concentration of NO, excess ratio of oxygen, the injection amount of ammonia, concentration of H2O, concentration of sodium in the experimental equipment.

建立实验装置，对先进再燃区中各种影响参数：天然气喷入量、一氧化氮初浓度、过量氧气系数、喷氨量、水蒸汽量、钠浓度等对脱硝效率的影响进行深入实验研究。

Glutamine is important in the storage and neutralization of free ammonia.

谷氨酰氨在自由氨基酸的储藏和分解中起主要作用。

Perm in the process of ammonia as a neutralizer shampoo was the use of a large number of shops and beauty salons.

烫发过程中氨水作为一种中和剂而被洗发店和美容院大量使用。

The experimental results showed that the nitrite accumulation obtained from selective inhibition of high concentration free ammonia to nitrifier was unstable.

论文摘要：采用沸石作滤料的生物滤池工艺，分别在高浓度氨、低溶解氧运行的条件下探讨了亚硝化过程选择性的实现。

Diamino-3,5-dinitropyridine and 2,6-diamino-3,5-dinitropyridine-1-oxide was reacted with aqueous ammonia and KMnO4 under different conditions. Substitutions in the 4 position to the nitro group were obtained with high yields: 2,4,6-triamino-3,5-dinitropyridine (81.5%) and 2,4,6-triamino-3,5-dinitropyridine-1-oxide (85.4%).

以氨水为胺化剂，KMnO4为氧化剂，在不同反应条件下实现2，6-二氨基-3，5-二硝基吡啶和2，6-二氨基-3，5-二硝基吡啶-1-氧化物4位的氧化胺化反应，目标化合物2，4，6-三氨基-3，5-二硝基吡啶和2，4，6-三氨基-3，5-二硝基吡啶-1-氧化物的收率分别达到81.5%和85.4%。

Usually rod-shaped bacteria that oxidize ammonia or nitrites: nitrobacteria.

通常为杆状细菌科可以氧化氨或亚硝酸盐；硝化细菌。

The relative contribution of bacteria and archaea to ammonia oxidation is essential for our understanding of global nitrogen cycle.

氨氧化古菌和细菌对地球氨氧化过程的相对贡献率，是目前全球氮循环研究最重要的微生物生态学问题之一。

Live plants will help with the nitrogen cycle diminishing the amount of ammonia and nitrates in the aquarium.

活植物，将有助与氮循环减少的数额氨和硝酸盐的水族馆。

Recent study suggested a key role of archaeal ammonia oxidation in the marine nitrogen cycle.

已有的证据表明古菌在海洋氨氧化过程中发挥了重要作用，细菌则是土壤氨氧化过程的主要驱动者。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。