查询词典 carbon monoxide

The replacement of SF6 by refrigerant is under development. For example, R143a by AMC and FK by 3M Co. used as protection gas are both classified as HFC with short atmospheric lifetime and are easily to be decomposed into hydrofluoric acid, carbon monoxide and fluoric carbon monoxide at room temperature.

目前发展中的替代性保护气体以冷媒类为主，如澳洲AMC所采用的R134a及美国3M公司所开发的FK气体，两者都属於氟氢碳化合物，不过其半衰期短，即使在常温下，仍极易分解成氢氟酸、CO、COF2等，其中氢氟酸为有害物质，但因含量很少，且在高温下易与镁液反应，故对人体的为害很小。

The generation of carbon monoxide was discussed and carbon monoxide was both from the decomposition of carbon dioxide in gaseous phase and from the methane through surface processes.

分析讨论了产物中一氧化碳的来源，得到一氧化碳既来自二氧化碳的解离，也有甲烷转化的部分贡献，这包括了气相反应和表面反应两个过程。

The results show that the higher yield of CNF obtained by decomposition of carbon monoxide than that of methane over a series of alumina supported Ni/Fe catalysts prepared by deposition-precipitation method is attributed to the role of produced carbon dioxide and the different carbon diffusion mode on metal particle.

结果发现： 1。当采用CO为碳源时，催化剂在36小时内具有较为稳定的活性，当采用CH〓为碳源时，催化剂中Fe的存在不利于得到较高产率的纳米碳纤维；不同的纳米碳纤维产率与生长过程中形成的CO〓及碳在金属表面或者体相中的传递行为密切相关； 2。

Carbon monoxide poisoning is a venenation with high incidence rate and mortality rate.

一氧化碳(carbon monoxide，CO)中毒是当今发生率和死亡率最高的中毒。

The use of carbon monoxide from coal or natural gas to produce dialkyl oxalate is an important research area in C1 chemical technology. The chemical reactions and performance in the coupling reaction system for synthesis of diethyl oxalate from carbon monoxide and ethyl nitrite were tested in the presence of hydrogen under the typical coupling reaction conditions.

摘 要：实验研究了在氢气存在下，一氧化碳与亚硝酸乙酯偶联合成草酸二乙酯反应体系在典型操作条件下的化学反应和反应性能，结果表明氢气只与反应体系中的亚硝酸乙酯反应生成乙醇。

In order to improve the electrocatalytic activity of the anode in the Direct Methanol Feul Cell, three kinds of transition metal substituted phosphomolybdic acid modified platinum electrodes were prepared, and the electrochemical behavior in the sulphuric acid solution of transition metal substituted phosphomolybdic acid modified platinum electrodes and their electrocatalytic effects of methanol oxidation were studyed. The anti-poison effect to carbon monoxide of the prepared electrodes were studied by the carbon monoxide adsorbing.

为了提高直接甲醇燃料电池阳极催化活性，本文研究了三种过渡金属取代磷钼酸修饰铂电极在硫酸溶液中的电化学行为及对甲醇的电催化氧化作用，并利用一氧化碳吸附实验评价了三种过渡金属取代磷钼酸修饰铂电极的抗一氧化碳毒化性能。

The design of the hardware structure and software of an alarming instrument for monitoring carbon monoxide based the data collection clip AduC824 is introduced. The system can be used to examine the concentration of the carbon monoxide in the air around blast furnace and pipe.

本文介绍了一种基于数据采集芯片 ADuC824的一氧化碳监测报警仪硬件构成与软件设计的方法，该系统可以用来检测高炉、管道周围空气当中的一氧化碳气体的浓度。

Basing on theory analysis and simulation, considering four variables of temperature, rate of temperature change, carbon monoxide dense and rate of carbon monoxide dense change, software and hardware of conveyor belt fire detection system are designed.

在理论分析和仿真的基础上，综合考虑温度、温度变化率、一氧化碳浓度和一氧化碳浓度变化率四变量对胶带输送机火灾探测系统进了软硬件设计。

The gaseous monoxides nitric oxide and carbon monoxide, generated within the blood vessel wall, have been identified as important cellular messengers involved in the regulation of intracellular cGMP levels, platelet aggregation and smooth muscle relaxation, The mechanism by which carbon monoxide activates soluble guanylyl cyclase is similar to that of nitric oxide, and involves binding and dislocation of its heme-iron to induce a conformational change and activation of the catalytic site of guanylyl cyclase.

一氧化氮是体内最重要的气体信使分子，不仅是维持血管正常舒缩功能的重要介质，而且还有抑制单核细胞及血小板与内皮的粘附、聚集、抑制血管平滑肌细胞的增殖等作用。近年研究表明，内源性一氧化碳是体内另一个重要的气体信使分子，它是由血红素氧合酶氧化分解血红素产生的，具有与一氧化氮相似的生理功能。

However, some carbon compounds, such as: carbon monoxide, carbon dioxide, carbon disulfide, carbonate compounds, cyanide, etc. is still in the scope of inorganic chemistry described ...

然而某些含碳化合物，如：一氧化碳、二氧化碳、二硫化碳、碳酸类化合物、氰化物等等仍属于无机化学讲述的范畴。。。。

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％。