查询词典 ammonia

However, most soils have a high potential for large shifts of ammonium to ammonia.

然而，大多数土壤都很容易使大量的铵离子转化成氨。

A new method to determine the concentration of ammonia-nitrogen by ammonium ion selective electrode has been introduced in this paper.

摘要本文介绍一种新型的测量氨氮浓度的方法―铵离子选择电极分析法。

A new type of car is now being developed powered by anhydrous ammonia.

日前正在研制一种新型的以无水氨作动力的汽车。

In some ways, anhydrous ammonia is just as safe to handle as gasoline

在某种程度上说，无水氨使用起来与汽油一样安全。

It is prepared by reacting anhydrous ammonia and carbon dioxide gas under very high pressure in the presence of a suitable catalyst.

它是在某种催化剂参与下，由无水氨和二氧化碳气体在高压条件下反应生成的。

Increasing the amount of ammonia used could increase the production of aniline without much effect on the production of phenol.

提高反应原料中氨水对苯的比例，能提高苯胺的收率，且不会增加苯酚的生成量。

In the first step of thedouble annulation route, 2-amino-3-carbamoyl-5,6-dihydro-4-pyridones 2 werecreated in high to excellent yields by a formal [5C + 1N] annulation reaction ofketene--acetals 1 with ammonia.

第一步，二硫缩烯酮1和氨源通过[5C + 1N]加成反应产率极高的得到了2-氨基-3-氨基甲酰基-5，6-二氢-4-吡啶酮2。

To restore the ability of chromium can be dissolved in sulfuric acid, hydrochloric acid and High-FE acid and release hydrogen, but also of pure chromium with aqua regia does not work, when there is the presence of halogen ions in the acid can not be long-term stability, high temperature with alkali, hydrogen sulfide, sulfur steam, phosphorus, ammonia, such as carbon monoxide and water vapor reaction of the corresponding compounds, in the high temperature reaction of silicon into the silicide also chromium, chromium alloys with many metals generate a wide range of industrial applications, such as chromium-manganese stainless steel is used extensively for chemical plants.

铬的还原能力强，能溶于硫酸、盐酸和高FE氯酸而放出氢气，但纯铬连王水也不起作用，当有卤素离子存在时，在酸中不能长期稳定，高温时能与强碱、硫化氢、硫蒸汽、磷、氨、一氧化碳和水蒸汽等反应生成对应的化合物，在高温下还能与硅反应成硅化铬，铬能与许多金属生成合金广泛在工业上应用，如铬锰不锈钢大量用于化工设备。

Results: Using of handy infrared gas spectrometer, the ammonia, sulphur dioxide, acetone, butanone, ethyl acetate, chloroform, benzene, toluene, methyl alcohol, ethyl alcohol, isopropanol, and other harmful gases can be carried out quickly Online Testing. The arsine, hydrogen chloride, hydrogen cyanide, hydrogen sulfide can not be detected online.

结果：可利用便携式红外气体分析仪对氨、二氧化硫、丙酮、丁酮、乙酸乙酯、氯仿、苯、甲苯、甲醇、乙醇、异丙醇等有害气体可进行快速的在线检测，不能对砷化氢、氯化氢、氰化氢、硫化氢进行快速在线检测。

The ingestion and metabolism of ascidian Styela clava were studied in static water system, oxygen consumption rate, ammonia-N excretion rate, filtration rate, clearance rate, ingestion rates, ingestion intension and assimilation efficiency were measured under different temperatures, and the energy budget equations were established in lab.

本研究采用室内静水培养系统，从生理生态学的角度对柄海鞘的摄食、代谢及能量收支进行了研究，建立了不同温度下柄海鞘的能量收支方程。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。