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- Discuss the preparation on standard gas of methane in air and gas of hydrogen sulphide in nitrogen 空气中甲烷、氮气中硫化氢气体标准样品的研制
- standard gas of methane in air 甲烷标准气体
- Keywords standard gas of methane;ethane;ethene and ethine;preparation; 氮气中甲烷、乙烷、乙烯、乙炔标准气体;研制;
- The two gaseous Reference Materials, Carbon dioxide in nitrogen and methane in air, belong to standard mixed gases. 氮中二氧化碳和空气中甲烷气体标准物质属于标准混合气。
- The flame holder made of dense cordierite was installed in the quarter of the combustor.The premixed gas of methane and air was ignited just downstream of the flame holder to form a flat flame. 致密堇青石材质的多孔介质稳燃体位于燃烧器四分之一管长处,甲烷与空气的预混气体在稳燃体上方燃烧形成平面火焰作为加热热源。
- With increasing of temperature the proprtion of methane in the generated gas incr... 模拟烃气的组分碳同位素分馏显著,随模拟温度增加呈变重趋势。
- The content of methane in landfill gas is very high, and landfill gas has high heat value, is also a valuable clean fuel. 填埋气体中的甲烷含量较高,且具有较高的热值,是一种利用价值较高的清洁燃料。
- A standard curve is done by deterring a standard gas of benzene homologues,which can produce an auto database for quantifying the content of trial materials. 采用不同浓度的苯系物标气做一条标准曲线,可编辑出一个自动鉴别和定量所选化合物库文件,进行准确的定量分析。
- Determination of sulphuryl fluoride in air by gas chromatography. 空气中硫酰氟气体浓度的气相色谱法测定。
- The ignition temperature of methane in monolith and the variational trend of the gas temperature, the mass fractions of the main gas species, and surface species in single micro-channel are analyzed. 分析了单体式蜂窝块中甲烷的着火温度及单个微元管中气体温度、主要气相组分与表面组分的质量分数的变化趋势。
- Exhaust gas has been incriminated in air pollution in cities. 废气已过视为城市空气污染的原因。
- The portable humidity generator had the function of automatic generating standard gas of different flow and dewpoint by using the microprocessor and the technology of mass flow controlling. 该便携式湿度发生器利用分流法湿度发生原理,采用微控制器和质量流量控制技术实现了自动发生不同流量、不同露点气体的功能,可为露点测试仪检定和校准提供动态标准湿度气体。
- What is the percentage of nitrogen in air? 空气中所含的氮的比例是多少?
- Agriculture Also Contributes to Increased Concentrations of Methane in the Atmosphere. 农业也帮忙增加了甲烷在大气中的浓度。
- The comparison is made on the seepages of methane in coalbed core, sandstone core and coal powder core. 研究表明,煤层试样的渗透率受有效覆压的影响很大,其应力敏感性程度超过砂岩岩样。
- He sucked in air, then went under the water again. 他深深吸了一口气又潜到水里。
- To study state parameters of methane as atmosphere gas of pins under shock compression, Aluminum target chambers filled with methane gases to a pressure of 0. 为了研究冲击压缩下用作电探针保护介质的甲烷气体状态参数,用二级轻气炮加载方法加速平面钨合金飞片到4。
- Breathe in air the colour of lavender. 你将淡紫色的空气吸入了体内。
- The method of methane activation and the recent results of the dehydrogenation and aromatization of methane in the absence of oxidant are presented. 综述了甲烷活化的方法和甲烷无氧脱氢芳构化反应目前达到的结果。
- standard gas of ethylene in nitrogen 氮气中乙烯标准气体