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In this paper, different coal face 3801 in a mine gas emission time is based on gray theory of gas emission prediction method, a mine gas emission in GM (1, 1) prediction model made its prediction of gas emission, by making the residual test, the results show that the prediction accuracy can be predicted.

本文以某矿3801采煤工作面不同时间段瓦斯涌出量为依据，运用灰色理论提出了瓦斯涌出量的预测方法，建立了矿井瓦斯涌出量的GM(1 ，1)预测模型，并对其进行了瓦斯涌出量的预测，通过进行残差检验，结果表明预测精度高，可以进行预测。

On the basis of analyzing the geochemical indicators of the biogases of coal-bed gas type found at home and abroad and analyzing the geological conditions of forming these biagases,in comparison with the geological conditions and oil and gas distribution in Langgu Sag and in combination with microbial analogic experimental data,it is proposed that the types of the shallow gas in Langgu Sag should be biogenic transform gas and telogenetic biogas.

文章在对国内、外煤层气型生物气的地化分析数据和形成的地质条件分析的基础上，与廊固凹陷地质条件和油气分布状况相对比，结合微生物模拟实验数据，提出廊固凹陷的浅层天然气类型为生物改造气和后期式生物气，并初步阐明了其形成机制。

Biomass gas power generation technology is a renewable energy technology which is using gasification technology change a variety of agricultural, forestry wastes (such as rice husk, wood chips, straw, dung, garbage, sewage) into combustible gas, through deducting decoking, dehydration, cooling, purification process, the purified gas as a gas engine fuel to drive generator and change the heat into electricity.

生物质气体发电机组技术是一种可再生能源利用技术，是将多种农、林业废弃物（如食用菌菇菇肥、谷壳、木屑、秸秆、畜粪、生活垃圾、污水）利用气化技术转化为生物质气，通过除尘、除焦、脱水、冷却等净化过程，作为气体发动机的生物质燃料燃烧作功，带动发电机发电，将生物质能转化为电能。

Both the gas velocity profiles and total pressure distributions are well axial symmetric when flue gas pass by the demisters with rotated-stream trays , which the liquid drops are revolved and threw toward wall surface by flue gas to carry out gas-liquid separation .

结果表明：烟气经过折板除雾器，产生了明显的压降，且在拐角区域，湍流耗散强烈，是实现气液分离的关键区域；而烟气经过旋流板除雾器，速度和压强分布具有良好的对称性，液滴被气流旋转抛向壁面实现气液分离。

Various factors influencing natural gas hydrate f ormation were studied in laboratory,including gas composition,temperature,pressu re,water saturation,ion concentration,gas stirrin g and carbon dioxide gas,etc.

本文主要就影响天然气水合物形成的各种因素进行实验研究，包括气体组成、温度压力、含水饱和度、离子浓度、气体搅拌、CO2 酸性气体等的影响。

Diving LYH100S type-specific high-pressure breathing air compressors are designed for diving our country design, manufacture a high-pressure gas supply the latest devices, as a compressed gas improve gas pressure or gas transportation machines, widely used in diving operations, dive sports, salvage, water fire, fishing, aquaculture, salvage sediments, underwater engineering, marine carabineros, sea cliff on patrol, water park, ship manufacturing, gliding sports, marine surveying and mapping industry, in order to provide high-divers purification, cleaning tasteless, safe and reliable compressed air.

LYH100S型潜水呼吸专用高压空气压缩机是专门为我国潜水设计、制造的一种最新高压供气装置，它作为一种压缩气体提高气体压力或输送气体的机器，广泛适用于潜水作业、潜水运动、海难救助、水上消防、渔业捕捞、水产养殖、沉物打捞、水下工程、海上辑私、海崖巡逻、水上乐园、船舶制造、滑翔运动、航海测绘等行业，为潜水人员提供高净化、清洁无味、安全可靠的压缩呼吸空气。

This paper mainly described the pertinent knowledge about the generalization of gas supersaturation, the reasons and factors for gas supersaturation. Furthermore, the relations among life stage, hydrostatic pressure, temperature, intermittent exposure, detection, avoidance and the tolerance of fish to supersaturation were analyzed, AndKey words: dam; dissolved gas supersaturation; gas buhhle disease

本文主要就气体过饱和及气泡病做了具体描述，首先叙述了气体过饱和的研究概况、导致气体过饱和的原因和水温、压强等影响气体过饱和的因素，具体分析了鱼类不同生活阶段、液静压、温度、间歇性的暴露、探知和躲避能力导致其对气体过饱和忍耐大小的状况，并对气泡病的内部损伤如血液中形成的气栓、外部症状如身体各个部位形成的气泡做了具体的描述。

The Company is a production of scientific research as one of the specialized production gas appliance ignition electrode factories, with systems management concepts and advanced production testing facilities, products widely used in gas stove, gas water heater, gas oven, barbecue pits.

本公司是集生产科研为一体的专业化生产燃气具用点火电极的工厂，具有系统的管理理念和先进的生产检测设施，产品广泛适用于燃气灶具，燃气热水器，燃气烤箱，烧烤炉等。

By research for deep faults and igneous rocks related to CO2 gas fields, the author considers that magma is the carrier for CO2 gas migration, while the development of igneous rocks is an important sign of the synchronous fault spatio-temporal activity. The 'migration' is one of the most important elements for mantle source CO2 gas accumulation, which means that there are deep faults connected to the mantle, directly or indirectly, and fault activity must be consistent with CO2 gas migration in space and time.

通过对与CO2气田有关的深大断裂、火成岩进行综合研究认为，岩浆是CO2运移的载体，火成岩的发育则是断裂时空同步活动的重要标志，幔源CO2气的成藏要素最为重要的是&运&，即要有直接或间接与地幔相连的深大断裂，而且，作为一条断裂通道的活动要时空同步。

All in all, TRZ series elastic sealing gas valve suitable for gas pipelines, particularly suitable for underground gas pipeline, from the study of the situation abroad, many countries have adopted flexible natural gas pipeline valve plate, the same nominal diameter flexible valve plate Compared with the ball, have fire protection features, the price is about 30% lower than the ball, use the same effect.

总而言之，TRZ系列弹性密封燃气闸阀适用于燃气管线，特别适用于地下燃气管线，从国外考察的情况来看，许多国家的天然气管线上都采用弹性平板闸阀，同公称通径弹性平板闸阀与球阀相比，都有防火功能，而价格比球阀低30%左右，使用效果相同。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。