查询词典 ammonia

The method only relates to two raw materials of zinc chloride and ammonia, which can effectively avoid generating impurities in the complicated preparation process.

这种方法只涉及到氯化锌和氨水两种原料，可有效的避免在复杂的制备过程中产生的杂质生成物。

ZnO nanostructures were fabricated by a hydrothermal decomposition method of mixing appropriate quantities of ammonia (25%) and zinc chloride solution.

以氯化锌(ZnCl2)和25%浓度氨水(NH3H2O)为原料，采用水热法制备了ZnO纳米材料。

The safety concentration of ammonia nitrogen on the zoea larvae, mysis larvae and postlarvae was 0.295mg/L, 0.724mg/L, 1.072 mg/L respectively, and that of sulfurated hydrogen was 0.0430mg/L, 0.0553mg/L, 0.0705mg/L.

氨氮和硫化氢对日本对虾蚤状幼体、糠虾幼体和仔虾的安全浓度分别为：0.295，0.0430；0.724，0.0553；1.072，0.0705mg/L。

MS-222 and clove oil are widely used for fish immobilization. Effects of MS-222 and clove oil on oxygen consumption rate and ammonia excretion rate of juvenile Chinese sturgeon Acipenser sinensis were investigated in this paper.

研究了麻醉剂MS-222和丁香酚对中华鲟幼鱼呼吸与排泄的影响。

Acute toxicities of phenol,Cu2+,nitrite and total ammonia to juvenile Chinese sturgeon Acipenser sinensis fingerlings were determined in static bioassays.

研究了苯酚、Cu2+、亚硝酸盐和总氨氮对8~12日龄中华鲟 Acipenser sinensis稚鱼的急性毒性，中华鲟稚鱼的全长为(2.36±0.10)cm，平均体重为0.07 g。

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。

Nitrate serves as a terminal election acceptor in Alcaligenes faecalis,when it grows anaerobically with lactate and ammonia as the carbon and nitrogen sources,respectively.

粪产碱菌生长在NH_4~+和NO_3~-两种氮源的介质中时，优先利用NH_4~+，在好气条件下，NH_4~+的存在抑制了粪产碱菌对NO_3~-的同化作用。

TiO2 powder was prepared from TiCl4 with addition of aqueous ammonia by changing Ti4 hydrogel into its corresponding alcogel followed by ethanol-thermal ,dryness and calcination.

用四氯化钛为原料，经氨水沉淀、水洗、无水乙醇洗涤得到Ti4醇凝胶，对Ti4醇凝胶进行乙醇热处理、干燥、焙烧制得了TiO2粉体。

The alkalescent condition reduces the mass concentration of iron ions and fastens the nitration reaction of ammonia nitrogen, and leads to the concentration of nitrate.

偏碱性条件使铁离子质量浓度降低，同时促进了氨氮硝化反应进行，使矿井水中硝酸盐和亚硝酸盐质量浓度增加。

Using five kinds of different alkalized conditions in the experiment, the result showed that alkalization by strong ammonia was the best condition and obtained the highest rate of alkaloids.

在实验中采用五种不同的磁化条件，结果证明以浓氨水进行碱化为最佳条件，生物减收率最高。

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。