查询词典 nitrates

Aerobic denitrifying bacteria were isolated from soil and water. The ammonia could be aerobically oxidized to nitrates, then aerobically reduced to molecular nitrogen.

从土壤和水中筛选分离到混合脱氮微生物菌群，能在好氧条件下将NH+4一步步转化为N2排放，整个过程无NO-3的积累。

Finally,a solution combustion synthesis of pure and indium-incorporated ZnO powder was performed by using metal nitrates as oxidizer agents and carbohydrazide as fuel.

在中性溶胶溶液中，所制备的ZnO沿着[0001]方向生长；而在在酸性溶胶液中，由于H~+与晶体表面的OH~-配合体反应，抑制了沿[0001]方向的生长，使得水平方向的生长更容易。

Nitrates can have side effects, but they are usually milder than with other drugs.

硝酸盐可以有副作用，但他们通常是较温和的，比与其他药物。

NO+NH3 temperature-programmed reaction runs over reduced catalyst samples pretreated with various oxidizing species showed that both NO2 and HNO3 were able to reoxidize the V catalyst at much lower temperature than gaseous O2: furthermore, they significantly enhanced the NO + NH3 reactivity below 250 C via the buildup of adsorbed nitrates, which act as a surface pool of oxidizing agents but are decomposed above that temperature.

不+NH3 温度-规划反应奔跑结束减少催化剂样品预先处理与各种不同的氧种表示两者的没有 2 和 HNO3 能够到再氧化 V 催化剂在非常低的温度超过气体的 O2：此外，他们重要地可提高的那不+ NH3 反应度在下面 250？C 经由组织吸附硝酸盐，哪一个行为当做一表面池氧代理人但是被分解上方哪一温度。

By setting the retting duration of 20 hours, the factors affecting the residual gum percentage of the retted kenaf fibers are studied. The experimental results show clearly that the following factors have the significant influence on the residual gum percentage of the retted kenaf fibers and show the obvious variation tendency. The preferred processing parameters are as follows: pH value 7. 0、bath ratio 1: 50、reuse percentage of retting liquid 50%、air flow volume 2. 5L/min、temperature 40℃、nitric additives (ammonia is better than nitrates) percentage 0.45%.By comparison with anaerobic retting, the retting duration using aerobes is much shorter than that using anaerobes.

确定了以好氧微生物脱胶作为本课题的脱胶路线后，在特定的脱胶时间（20小时）条件下，通过分析不同参数条件下的残胶率，研究了好氧微生物脱胶的各种影响因素对红麻脱胶的影响规律，并优选出最佳脱胶液回用比为50％，最佳pH值为7.0，最佳气流量为2.5L/min，最佳浴比为1：50，最佳水浴温度为40℃，最佳含氮添加剂为铵盐类化合物，最佳含氮添加剂用量为0.45％。

The amount of food you give you fish has a big influence on the amount of nitrates present.

粮食数量，你给你鱼，有一个大的影响，对量的硝酸盐。

Nitrates in the water are hazardous to people's health.

水中含有硝酸盐会危害人们的健康。

Nitrates and beta blockers may also be necessary.

硝酸盐和β阻滞剂也可能是必要的。

Our water supply is becoming polluted with nitrates.

我们的水源正受到硝酸盐的污染。

In the UK attention was particularly focused on lead and nitrates.

在英国的注意力特别聚焦在领导和硝酸盐。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。