| 1. | Electronic distance measurement
电子测距法 |
| 2. | Petroleum and liquid petroleum products - calibration of horizontal cylindrical tanks - part 2 : internal electro - optical distance - ranging method
石油和液化石油产品.卧式柱形油罐的校准.第2部分:内部光电测距法 |
| 3. | Methods for calibration of vertical cylindrical tanks for petroleum and liquid petroleum products - internal electro - optical distance - ranging method
石油和液态石油产品用立式圆柱形储罐的校准方法.内电光测距法 |
| 4. | Petroleum and liquid petroleum products - calibration of horizontal cylindrical tanks - part 2 : internal electro - optical distance - ranging method
石油和液态石油产品.卧式圆筒状油罐的标定.第2部分:光电内测距法 |
| 5. | Petroleum and liquid petroleum products - volumetric calibration of vertical cylindrical metal tanks - electro - optical distance - ranging internal method
石油和液体石油产品立式圆筒形金属油罐容积标定法光电内测距法 |
| 6. | Because conventional single - terminal method of fault location ca n ' t eliminate the influence of fault resistance and the remote in - feed , its utility is limited
单端测距法由于存在难以消除过渡阻抗和对端系统阻抗的影响这一缺陷，使其应用受到限制。 |
| 7. | The majority of work that is presented in this thesis is listed as follow : the most problem of two - terminal fault location method is that the sampling of two - terminal dates is unsynchronized . thus this thesis presents a new unsynchronized technique for two - terminal fault location
全文主要工作如下：双端故障测距法所面临的主要问题是两端数据采样的同步问题，针对这一问题，本文提出了一种不需要两端数据采样同步的工频故障测距新方法。 |
| 8. | The main tasks of this thesis are as follows : ( 1 ) a two - terminal fault location arithmetic based on the synchronization sampling of gps has been brought up . ( 2 ) because of the cost of gps and the truth that there is phase difference of two - terminal , the two - terminal fault location arithmetic is faced up with facts that how to keep the sampling data of two - terminal synchronous . according to that , two new methods are proposed , which do n ' t need the synchronized sampling data of two - terminal
全文主要工作如下： ( 1 )利用全球定位系统gps的授时功能，提出了基于gps同步采样的双端故障测距算法； ( 2 )由于增加gps硬件设施，造价比较高，且客观上双端数据存在着不同步相差，双端故障测距法所面临的主要问题是两端数据采样的同步问题，针对这一问题，本文又提出了两种不需要两端数据采样同步的工频故障测距新方法，基于powell方向加速法和基于遗传算法的故障定位算法。 |
