查询词典 gas-mask

Nowadays, it is largely used in ironworks and cement plants, etc. If we change its spray gas with nitrogen, improve inlet gas of cleaning tube and bleeder value; it can be fit for gas cleaning in steel-making firms and ironworks.

假如将其中的喷吹气源改成氮气，并将除尘筒内的进气、出料阀进行适当改造，该系统完全可用于炼钢、钢铁厂的煤气除尘，因此本系统具有很广的应用范围。

On the basis of slip-diffusion model of multiphase flow, a three-dimensional mathematical model of gas-particle flow in blowpipe has been developed and debugged to calculate the gas-solid two phases flow, including gas velocity and particle velocity inside the blowpipe.

运用多相流的拟流体模型建立了高炉局部富氧喷煤直吹管内气粉两相流动的数学模型，对气粉两相流场进行了数值研究，探讨了气相和煤粉的速度分布规律及其影响因素，其中包括氧-煤喷枪的结构、漩流数和富氧率等。

The coal gas dry process desulphurization technology application early, most early applies in the coal gas dry process desulphurization technology is take the bog ore as the sweetening agent ferric oxide desulphurization technology, afterwards, studies successful and the production cost along with the coal gas desulphurization activated charcoal reduces relatively, the activated charcoal desulphurization technology also starts widely to apply.

煤气干法脱硫技术应用较早，最早应用于煤气的干法脱硫技术是以沼铁矿为脱硫剂的氧化铁脱硫技术，之后，随着煤气脱硫活性炭的研究成功及其生产成本的相对降低，活性炭脱硫技术也开始被广泛应用。

After this project completes, both undertakes is receiving the upstream to be mad that with to user's and so on natural gas power plant high pressures makes an honest deposition the duty, and can, in loyal Wu Xian, Huai Wu Xian and transport the natural gas from the west to the east two and so on 4 brake pipe complete breakdowns stop in the extreme case which was mad, realizes a level accident to safeguard, becomes the important spare gas storehouse resources.

该工程建成后，既承担着接收上游来气和对天然气电厂等用户的高压直供任务，又能在忠武线、淮武线和西气东输二线等4条输气管线全部故障停气的极端情况下，实现A级事故保障，成为重要的备用气库资源。

Hence, based on deep analysis and research, the new type gas treatment series facilities are developed, which are composed of multiple bunker gas separators, Foehn wind ventilation shaft, universal wind deflector, brattice and two-way air regulator. As a result, a new way of gas treatment has been developed for the coal preparation plant.

为此，通过深入分析，研究开发了一种新型瓦斯治理系列装置，该装置构造设施由若干个煤仓瓦斯分离器、檒风通风塔、万向导风器、风幛和双向风窗组成，为选煤厂的瓦斯治理开辟了一条新途径。

On the basis of the pressure correcting method about the measurement of bubble size distribution a photoelectrical capillary probe technique with a micro-computer on line was successfully used to study in detail the effects of various operating parameters such as gas rate, feed rate, feed concentration, NaCl concentration in solution, gas bubbler and gas bubbling state on bubble and foam bubble size distributions in foam fractionation column.

在已建立的光电毛细探头技术测定气泡尺寸分布的压力校正方法基础上，应用光电毛细探头微机在线测量方法，研究了各种操作参数，如气体流速、进料量、进料浓度、溶液中NaCl浓度、气体分布器以及布气状态等，对泡沫分离塔内气泡和泡沫气泡尺寸与分布的影响。

Considering the interaction of practical gas, using the canonical distribution and statistical interpretation of gas pressure, this paper derives a pressure formula of practical gas directly.

考虑到实际气体分子之间的相互作用，利用正则分布，按照气体压强的统计解释，得到了实际气体的压强方程。

At the same time, combining with the actual condition of delivery pipeline of our country and some prevalent leak detection and location methods, this paper raised a method, which is based on wavelet analysis and negative- pressure-wave to detect and locate the leakage. Jobs in the paper are as follows:As affected by gas density, pressure, specific heat and pipe material, the velocity of negative-pressure-wave improved depending on the energy conservation. At one time, taking the affection of velocity of gas flow, the location formula was modified in some degree.When locating the leaks with location formula, the iterative approach algorithm was adopted as a new method to increase the location accuracy level of system.Multi-scale decomposition and reconstruction of wavelet transform is utilized to filter the noise of negative-pressure-wave, which was brought by leakage. With the capacity to detect the signal singularity fast and accurately, wavelet transform was used to catch the break point of pressure signal. The work improved the accuracy of At in location formula, accordingly improved the location accuracy.Wavelet is a suitable tool for signal analysis. The distinct character is that the mother-wavelet is of optional. That means choosing different mother-wavelet will get different analysis result. So we studied how to choose mother-wavelet and its scale for signal singularity detection. The method is to choose a wavelet by regularities of the wavelet and the signal.Finally, a plan, which bases on SCADA system for inspection and detection of natural gas leakage, is proposed in the article.

其中，主要进行了以下几方面的工作：针对泄漏产生的负压波在管道中的传播速度受媒介的密度、压力、比热及材质等因素的影响，而非声波在空气中传播的速度，本文利用能量守恒原理，对其进行了修正；考虑到管内气体流速对压力波速的影响，对原始的负压波定位公式进行了一定程度的改进，并在利用定位公式进行泄漏点定位时采用逐步迭代逼近算法，提高了系统的定位精度；利用小波变换的多分辨率分解和重构技术，对采集到的管道发生泄漏时产生的负压波信号进行了降噪处理；并利用小波变换技术对信号奇异点的快速、准确的识别能力，对经上述消噪后的负压波信号进行了奇异点捕捉，精确捕捉的结果提高了定位公式中上下游站点采集到的负压波奇异点的时间差△t的精度，从而进一步提高了定位的精度；考虑到小波变换是一种基波可变的信号分析工具，也就是说，不同的小波基波对信号分析的结果将有很大差别，这势必影响最终的处理结果，因此，我们又对比分析了本课题中小波基及尺度的选择问题，依据规则性系数相似性原理对母小波的选择进行了探索性研究；最后，还提出了基于SCADA的泄漏检测与定位系统的软件开发构想及系统的嵌入方案。

Chidken to be reared in the upper space of piggrey, chicken manure as pig feeds, pig dung to be fermented as the source of march gas, march gas to be used generating electricity, the sediments of gas-generating pit as fish feeds, liquid from the pit flowing into fish pond and irrigating greenhouse, water form fish pond as fertilizer of paddy fields, this is a comprehensive eclogical pattern composer of circulating utilizalion of food chain and multiplc-direction transformation of energy.

猪舍上层空间养鸡、鸡粪喂猪、猪粪沼气发酵、沼气发电、沼渣喂鱼、沼液注人鱼池和温室、鱼池肥水浇灌稻田。地""空""永立体养殖，是食物链循环利用和能量多方位转化的综合性生态模式。本模式是以养猪为主体，以沼气发酵为中心枢纽的集鸡、猪、鱼及种植业为一体的综合性立体养殖业。它具有相应的结构组成，适宜的结构比例和良好的社会效益、生态效益和经济效益。

Aiming at some problems of oil﹠gas drilling safety assessment methods, such as bad cooperation, not scientific of general judgment, not comprehensive or exact of the index contents and so on, considering the wide meaning, complex, high chiasma and faintness of oil﹠gas drilling process safety assessment index and the complexity of the assessment system itself and the particularity of hoisting system, this paper mainly studies on safety assessment indexes system and safety assessment method of oil﹠gas drilling hoisting system process .

针对目前油气钻井作业安全评价分析方法的配合性差、综合评判的科学性不强、评价指标反映的内容不全面和不准确等问题，并考虑到油气钻井作业安全评价指标体系中评价指标含义面广、交叉性和模糊性强，以及评价指标体系结构自身的复杂性和油气钻井作业八大系统中起升系统作业的特殊性，本论文重点对油气钻井起升系统作业安全评价指标体系及安全评价分析方法进行了研究。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新