查询词典 gases

Learning by doing in truth achieves the abatement of greenhouse gases; it gives a hint government has to promote the action for abatement of greenhouse gases; hence, we can approach to the decoupling circumstance for greenhouse gases emission advanced.

做中学的确有助於温室气体减量成效的提升，隐含政府应及早推动温室气体减量行动，可以及早达到温室气体排放绝对脱钩之结果。

This dissertation is concerned with the kinetics of the nonequilibrium dissociation and ionization of gases that are significant in the high temperature gas dynamics. There are two parts in the dissertation. In the first part, the kinetics of dissociating gas, a theoretical calculation is made of the nonequilibrium dissociation of the diatomic molecule behind a strong shock wave front.

中文题名高温气体解离和电离动力学研究副题名外文题名 The study of the kinetics of dissociation and ionization in the high temperature gases 论文作者王苏导师崔季平何宇中研究员范秉诚高级工程师学科专业一般力学研究领域\研究方向学位级别博士学位授予单位中国科学院力学研究所学位授予日期2001 论文页码总数125页关键词气体动力学电离复合非平衡解离速率振动－解离耦合馆藏号BSLW /2003 /O354 /1 本论文选取在高温气体动力学中具有重要意义的气体非平衡解离和电离动力学作为研究对象，包括两部分内容。

Surface ozone data of Mauna Loa and the other 14 monitoring sites of altitude lower than 1000 m in the northern hemisphere were used to give a joint discussion for the distribution and variation features of surface O3. The data, based on ground observation, were collected, processed, and distributed by WDCGG (World Data Centre for Greenhouse Gases) in GAW. The monthly mean and hourly data of surface ozone in these 15 sites were analyzed to sum up the difference of surface ozone annual and seasonal variations in different areas of the northern hemisphere.

利用来自GAW（Global Atmosphere Watch，全球大气监测）的、由WDCGG World Data Centre for Greenhouse Gases，世界温室气体数据中心）收集整理和发布的、基于地基观测的北半球共15个站点的地面O3含量的逐月观测资料以及逐时观测资料，分析、对比并总结了北半球不同经纬度各区域的地面O3含量的年变化和各个季节的日变化规律。

In order to overcome the technological difficulties encountered in the course of insulation fault diagnosis on the base of dissolved gases analysis, several kinds of mathematic models and actualized methods are brought forward to improve the reliability and veracity of fault diagnosis of transformers. The research works are shown mainly as followings:1 A modified fuzzy multi-criteria method is brought forward for insulation fault diagnosis of transformer. Furthermore, a new method for insulation fault diagnosis is proposed on the base of fuzzy multi-criteria together with rule reasoning. With fuzzy diagnosis in the method, fault reasons are filtrated and then the reasons in low probability are prohibited, Moreover, the left reasons are testified by using rule reasoning and then final concludes are drawn in much less misjudge probability and better results.2 On the base of geometry characteristics of C- partition to sample set of DGA data of transformer, a method is put forward to compute effective radius of neighbor field of a sample, number of clusters and values of initial centers. Moreover, the fuzzy C- means cluster model with adaptive weight is brought forward in the first time and then the fault classifier is designed for insulation fault diagnosis of transformer.3 According to the weakness of the degree of gray of gray incidence, a new formula to compute DGI is put forward and then incidence order criterion is ascertained. Moreover, a new DGI model for fault diagnosis is proposed according to the further analysis to relationship between fault reason and content of oil dissolved gases of transformer.

为解决在应用油中溶解气体分析方法（Dissolved Gases Analysis，简称DGA）诊断变压器内部绝缘故障时所遇到的主要技术难题，论文提出了用于提高变压器故障诊断准确性和可靠性的数学模型及实现方法，主要研究工作如下：1）提出了一种改进的变压器绝缘故障诊断模糊综合评判方法；进一步提出了将模糊综合诊断与规则推理相结合进行绝缘故障诊断的方法，该方法采用模糊推理对故障原因进行"过滤"，滤掉可能性极小的原因，然后进一步利用规则推理验证剩下的可能原因，得出最终结论，大大减少了误判比率，获得了较好的效果。2）根据以变压器DGA数据为特征量的样本空间的c-划分几何特性出发，提出了一种求取样本有效邻域半径和聚类数及聚类中心初值的方法，在此基础上，首次提出了一种自适应加权的变压器绝缘故障诊断的模糊c-均值聚类模型，并设计出故障分类器。3）针对常用灰色关联度的不足，提出了一新的灰色关联度计算公式及确定关联序的准则；并在此基础上，通过深入分析变压器发生绝缘故障时的原因与油中溶解特征气体含量的关系，建立了一种新的故障诊断灰色关联模型；通过实例分析证明，该方法能有效地诊断出变压器绝缘故障及故障部位，大大提高了诊断的准确性。

This paper introduces the magnetic susceptibilities of common gases. Based on the physical characteristics that oxygen is a paramagnetism gas and its magnetic susceptibility is obviously higher than other gases, a magnetomotive design scheme is proposed and analyzed to measure the content of oxygen in mixed gases.

介绍常见气体磁化率，利用氧气顺磁性，且磁化率明显高于其它气体的物理特性，分析磁动式测量混合气体中氧气含量的方案。

We understand that (1) releasing gases are mainly made up of CO 2 and alkane gases, and have a little ethylenic gases. There is a gas releasing peak at the temperature of 300～400℃ and the content of C 4～C 6 increases with temperature ri...

二氧化碳随温度的升高释放量增大，主要为碳酸盐分解贡献；(2 )含碳气体碳同位素随温度的升高增重，在气体释放峰温度段 350℃左右时发生明显&转折&，碳同位素组成明显变重，结果造成在不同的热演化阶段碳同位素值有较大范围的变化。

Petroliferous gases mainly refer to the associated gas of crude oil, including petroliferous pyrogenic gases and petroliferous cracked gases.

中国经过20年天然气科技攻关，已形成天然气成因类型及其鉴别标志的理论体系和方法。

Products: Highly Toxic Gases, High-Purity Gases, Rare Gases and Pyrophoric Gases

产品：剧毒气体，高纯度气体，稀有气体和自燃气体

Are specializing in the design, production of industrial equipment and auxiliary gas, dissolved acetylene equipment (seamless, welding, dissolved acetylene, liquefied petroleum, natural gas and other gas cylinders) Chemical Equipment and accessories, all kinds of gas Filling Units, bus high-purity, specialty, medical gas cylinder seamless vacuum devices do bath, stainless steel PTFE metal software, bellows, industrial gas high, medium pressure valves, the fittings in the gas, industrial gases pallets, providing liquid oxygen, liquid nitrogen, liquid argon, liquefied petroleum, liquefied natural gas, two ice machines, to undertake air separation, acetylene equipment¨and renovation project as well as standard gas, mixed gases, specialty gases, high purity gases configuration and installation industry.

丹阳市荣发气体设备有限公司是专门设计，生产工业气体设备及辅机，溶解乙炔成套设备（无缝，焊接，溶解乙炔，液化石油，天然气等气瓶）化工设备及配件，各种气体充灌台，汇流排高纯，特种，医用气体无缝气瓶真空干澡装置，不锈钢四氟金属软件，波纹管，工业气体高，中压阀门，各中气体配件，工业气体集装架，提供液氧，液氮，液氩，液化石油，液化天然气，二冰机，承接空分，乙炔设备建站及改造工程以及标准气体，混合气体，特种气体，高纯气体的配置工业及装置等。

First, based on the measurements of absorption cross-section, the absorption characters of the main polluted gases in flue gas were deeply studied, and found that SO_2、 NO、 NO_2、 NH_3 had a character of approximate periods absorption at some wave band, which is a good chance of a new measurement introduced. Secondly, the factors about absorption cross-section of the gases measured, which affect on the measurement precision of DOAS, is studied deeply. The influence of pressure and temperature on absorption cross-section was given special research, and the compensated measures were given to the gases based on the character of the gases. Thirdly, in practical measurement, it must have been satisfied that the monochromator was consisted with the reference spectrum, which was based on absorption cross-section. In order to satisfy the consistency, the technique of reversion in the image was introduced, the reversions of spectrums were realized with wiener filter and noise elimination based on wavelet transform.

首先从吸收截面的测量入手，对烟气中主要的污染气体SO_2、NO、NO_2、NH_3的吸收特性进行详细研究，发现这些气体在局部区域具有准周期吸收特征，这为引入新的测量方法提供了契机；其次，对决定DOAS测量精度的被测气体吸收截面的诸多问题进行了深入研究，重点研究了压力、温度对被测气体吸收截面的影响，并针对被测气体的特征提出了相应的修正措施；再次，在实际测量中，要求所使用的光谱仪必须与以吸收截面为基础的参考光谱相匹配，为了满足匹配这一条件，文中将图像复原技术引入到光谱复原，使用维纳滤波和小波消噪实现了光谱的复原，将复原后的光谱与所使用光谱仪的仪器函数卷积，即可实现；最后，在对DOAS测量原理详细分析的基础上，对传统的最小二乘—差分吸收光谱法进行了详细的阐述，通过实验证实两点：1。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。