您要查找的是不是：
- gas zone refining 气体区域提纯
- These metals may be purified by a technique called zone refining. 这些金属可以用所谓“逐区提纯法”来提纯。
- The absorber clean gas zone consists of two stages mist eliminators (ME). 吸收塔喷射区位于箱体水位计之上，由开孔的不锈钢托盘组成。
- The absorber could be divide into three major parts as absorber reaction tank, absorber spray zone and clean gas zone. 吸收塔可以大致被分成三大主要部分：吸收塔反应箱、吸收塔喷淋区和除雾区。
- During the drilling of well Dina-2, serious blowout and fire took place when drilling into the high-pressured rich gas zone. 迪那 2井钻遇高压、高产气层后发生强烈的井喷并着火。
- It is a kind of unconventional shallow biogenic gas and characterized by thin gas zone, low depression and low production. 通过试验研究得到以下认识：重点目标区预探或已知气田区扩边可以采用打密集静力触探井的方法；
- Since the geneses of low resistivity gas zone with sandstones are complex in SU gas field, it is difficult to indentify the gas zone and water zone. SU气田砂岩低电阻率气层形成原因复杂,气水层识别也非常困难。
- Formations penetrated by the Heba 1 Well are complicated, including lower ultra high pressure gas zone with hydrogen sulfide, plastic gypsums, leakage formations, etc. 河坝1井钻遇地层复杂,下部有含硫化氢的超高压天然气层、塑性盐膏层、漏失地层等,易出现井漏、喷漏同存、卡钻等井下复杂情况和事故。
- On the basis of crossplot and ratio methods, the features of gas zone distribution in both horizontal and vertical direction by means of multiwell evaluation. 本文从测井曲线环境校正和侵入校正着手，利用有效孔隙度差值交会法、视流体时差与视流体密度比值法等较准确地识别气层，提高了解释符合率。
- Conventional logging data and new logging techniques, such as MDT, RFT, DSI and C/O etc. are used to select feature parameters for identifying gas zone qualitatively. 进而采用三角形交会法、库克尔法及区域经验法等定量评价气层的地质参数。
- zone refining unit and equipment 区域提纯设备和装置
- multiple electron gun zone refining 多电子枪区域精炼
- electron beam zone refining furnace 电子束区域熔炼炉
- micro-scale zone refining apparatus 微量区域提纯设备
- temperature-gradient zone refining 温度梯度的区熔提纯
- pseudo-continuous refining zone refining 假连续区熔提纯
- The lithology interference could be minimized during the process of gas zone identification parameter extraction, and multiparameters are adopted to identify the gas zone synthetically. 在提取气层识别参数过程中尽可能地减少岩性干扰，采用多参数综合识别气层。
- Based on information of abnormal gas zones, a trend surface method is used to simulate gas distributing rule in the paper. 本文在分析瓦斯异常带成因的基础上，采用趋势分析方法，用趋势面来模拟瓦斯带的分布规律，设定趋势分析剩余值的阈值即可以划定出瓦斯异常带。
- These types of gas zones were underestimated or missed based on conventional Archie Formula or Resistivity for oil saturation calculation. 储层具有较好的孔隙度和渗透率或微裂缝的存在是泥浆侵入的前提条件;
- The diagenetic sequence and pore evolution of gas zone are very different from those of non-gas zone owing the differences of the water energy at sedimentary stage and the diagenesis at burial stage. 由于沉积阶段水体能量的差异和埋藏阶段成岩作用的不同，气层和非气层的成岩序列和孔隙演化模式存在较大差异。
