气

However, it is unavoidable the spillage and leakage of crude oil and oil products occur in the processes of oil exploitation, refinement, transportation and application. First of all, a small amount of light hydrocarbons volatilizes into atmosphere while the others can stay in the unsaturated zone or reach groundwater table under the action of gravity and capillary pressure, which may directly or indirectly cause oil pollution of groundwater system.

但是，在石油的开采、炼制、运输和使用的过程中，不可避免地会有大量原油和石油制品抛洒或泄漏于地面，其中的一些轻质石油组分通过挥发进入大气，而绝大部分石油会在重力和毛细力的作用下渗入包气带，或者透过包气带达到地下水面，从而间接或直接地污染地下水。

After analyzing the properties of the crude volatilizing gas in overhead tank and the requirements of its recovery method,an effective way of recovering by natural gas through the matched multistage ejectors is proposed and in combination with the experimental results of two sets of systems under multiple operating mode,some main points of design and mana...

在分析了高架罐原油挥发气的性能特点及其回收方法的要求以后，提出了通过匹配式多级喷射器利用天然气进行回收的有效途径，并结合两套系统多种工况下的试验结果，给出了以方便工程应用为准则的匹配式多级喷射器的设计管理要领：全压缩比的分配，两级时，第一级约为第二级的 1.4倍；三级时，第一、二级应分别为第三级的 1.8倍和 1.3倍左右；设计点要选择在工作气体参数范围的下限或下限附近；整套系统串联的级数以 2～ 3级较为合适，一般不应超过 4级；在高架罐的耐压范围内，原油挥发气的压力越高对回收越有利

The merits of the acetylene gas and the defects of new type of welding gas are completely mixed together on the aspect of theory and practice .

理论和实践上把乙炔气的优点和新型焊割气存在的缺点完整的捏合在一起。

In the present work, different shaped carbon nanotubes were produced by the general CVD and the template method at different temperature (600 ℃,700 ℃) with the reaction gas of acetylene.

以乙炔作为反应气，用化学气相沉积法和模板法在不同温度(60 0℃、70 0℃)下制备了不同形貌的碳纳米管，并采用TEM ，HRTEM ，SEM ，XRD ，Raman和充放电实验方法研究其形貌、结构和电化学嵌锂性能。

Chiron Corporation developed a new industrial gas, energy conservation, environmental protection, cutting significantly reduce operating costs and become fully replace the high energy-consuming and high pollution of the new industrial gas acetylene gas source, the industrial enterprises are generally welcomed.

公司研制的凯龙新型工业燃气，节能、环保，大幅度降低切割作业成本，成为全面取代高耗能、高污染的乙炔气的新型工业气源，受到工业企业的普遍欢迎。

Methods Ninety-one coronal CT scans of chronic sinusitis were analysed with mutimedia software developed by the authors. Sinus CT images were scanned into multimedia computer and the subtle anatomic structures such as pneumatization of the middle turbinate, agger nasi cell, Haller's cell, septal deformity , maxillary sinus hypoplasia , abnormality of uncinate process and ethmoid bulla and so on were measured.

用自行开发的计算机图像分析系统定量分析91例慢性鼻窦炎患者的冠状位鼻窦CT，观测指标包括：骨性解剖结构变异(包括中鼻甲气化、反常曲线中鼻甲、Haller气房、鼻中隔偏曲、上颌窦发育不良、鼻丘气房、钩突气化)、筛漏斗、钩突角度、筛泡等，测量相应结构的冠状位截面积、角度、长度。

Through the experiment carried out in a water pot under conditions of different shape dimension, section figure of air emitter belt and the quantity of air, the research on how these conditions effect the resistance is done, and the actual resistance values of the bubble screen air emitter belt are also got.

通过在水筒中进行的气幕喷气环阻力性能试验，就喷气环的外形尺寸、截面形状和喷气流量对阻力的影响进行了研究，得到了所研究气幕喷气环的阻力数据。

Creating an even and steady air cushion is the crucial technique of the air cushion rubber conveyer belt,In the paper based on years of practices and references from home and abroad,we analyse the mechanism of the shaping of an air cushion and its interreacted factors futher more, we introduce the interrelations of the factors and a reasonable choice of each parameter.

气垫式胶带输送机的技术关键是形成一层均匀稳定性的气膜，根据多年来的实践经验和国内外资料，我们分析了气膜形成的机理及其影响因素，并介绍各因素的相互关参数的合理选择。

Surface of the manifold box by the air pressure in the bag.

密封垫利用分气箱内的空气压力固定在分气箱表面。

Besides, it can avoid the direct flow of steam and air mixture to air extraction outlet, in case of the load accretion for air ejector.

设置当汽板，防止主凝结区的蒸汽与空气冷却区的空气混合，影响传热效果；并防止蒸汽不经过主凝结区直接进入空气冷却区而增大该区域的热负荷；还可防止蒸汽-空气混合物不经过空气冷却区，直接流入抽气口，而使抽气器负荷增大

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了