排序方式： 共有25条查询结果，搜索用时 0 毫秒
21.
伴随苏301区块的不断开发,部分单井产量低,油气比低,导致密闭储油罐无天然气进行燃烧,单井罐无法装车的问题。综合区块内现有生产井的天然气产量情况,将低产气井与产气高井进行联组,解决低产气井的加热问题,减少高产气井的天然气外派浪费。 相似文献
22.
23.
周天亮 《电脑技术——Hello-IT》2002,(12):58-59
当Windows XP出现故障，而安全模式和其他启动选项不起作用的时候，很多用户认为只有重新安装才能解决问题，其实我们还可以使用最后一招——故障恢复控制台。故障恢复控制台是Windows XP提供的一种字符界面的工具，可以等同于Windows 9X系列中的纯DOS方式。通过故障恢复控制台，可以启用和禁用服务，格式化驱动器，在本地驱动器上读写数据（包括被格式化为NTFS文件系统的驱动器），并执行许多其他管理任务。但是，只有可以使用基本命令识别并定位有问题的驱动程序和文件的高级用户(也就是要有DOS命令及文件目录的知识），才建议使… 相似文献
24.
The density of states (DOS) of 17 kinds of rare earths (RE) doped futile TiO2 was by using fast-principles density functional the-ory (DFF) calculation. The band gap widths of RE doped rutile TiO2 were important factors for altering their absorbing wavelengths. The results show that RE ions could obviously reduce the band gap widths and form of energy of rutile TiO2 except Lu, Y, Yb and Sc, and the order of absorbing wavelengths of RE doped rutile TiO2 were the same as that of the results of calculation. The ratio of RE dopant was an-other important factor for the photo catalytic activity of RE doped rutile TiO2, and there was an optimal ratio of dopant. There was a constant for predigesting the calculation difficulty, respectively, which were 0.5mol.% and 100 mol-1 under supposition. The band gap widths of RE doped rutile TiO2 by DFT calculation were much larger than that by experiment. Finally, by transferring the calculation values to experiment values, it could be found and predicted that RE enlarged obviously the absorbing wavelengh of futile TiO2. In addition, the degree of RE ions edging out the Ti atom using the parameters of RE elements was computed. 相似文献
25.