| 1. | Near - field behavior of thermal wastewater from side - discharge 热污水表面侧排的近区特性 |
| 2. | Application of down - hole millisecond blasting near high frequency launcher 高频发射装置近区孔内多段毫秒爆破技术 |
| 3. | Verification regulation of model rj - 3 near - zone electric - field measuring instruments Rj - 3型近区电场测量仪试行检定规程 |
| 4. | Verification regulation of model dchy - 801 near - zone electric - field measuring instrument Dchy - 801型近区电场测量仪试行检定规程 |
| 5. | The topological characteristics graph of flow is derived by means of topological analysis method 通过拓扑分析的方法,给出了横流中有限宽窄缝射流旋涡近区流场的拓扑性质。 |
| 6. | The merit of travelling waves location is its high precision , but it has dead line if the fault location is close to the line terminal or the fault occurs at the time close to zero point of current 行波法测距的优点是精度高,但对近区故障或电流过零附近时刻发生的故障存在测距死区。 |
| 7. | Because affected by the type of lines , fault resistance and two sides systems , fault analytical location has lower precision , but it has no dead line and is more better accurate if the fault location is close to the line terminal 故障分析法由于受线路类型、过渡电阻、两端系统的影响测距精度较差,但故障分析法不存在测距死区,尤其对近区故障的测距较为准确。 |
| 8. | The value calculated by the new model approximates the measure data , and the value that calculated by the whole depth mixing 2d model is much less than the measure data in the near field . this model is also superior to the traditional 2d model for its precision 可以看出,新建的部分水深平均水质模型计算值与实测值符合较好,而传统的全水深平均模型在排放口近区范围内计算浓度值及污染带范围明显小于实测值。 |
| 9. | This method utilizes near - field data to determined an equivalent magnetic current source over a fictitious surface which encompass the em radiation source . this magnetic current , once determined , can be used to ascertain the near and the far field 将近场的测量数据用来确定一个等效磁流源,该等效磁流源位于包含电磁源辐射口面的假设平面上,当确定了这个等效磁流源以后,利用它计算出辐射源的近区场和远区场。 |
| 10. | Applying relative arithmetic to all kinds of faults and calculating off - line , we can master time - distance relation chart for all kinds of faults . computation indicates : when transmission lines occur faults , the data window of protection algorithm consisting of prefault and postfault data at the same time has important significance . the following methods are useful to achieve the inverse time characteristic : calculating impedance by using flourier in a full cycle , calculating work voltage by using fault component , calculating the torque created by a phase comparator or a magnitude comparator 实际的计算表明:输电线路发生故障后,用故障前后的数据同时充满保护算法的数据窗,对于快速切除近区故障具有很重要的意义;同时利用故障前后的数据,下述方法可以比较好地实现距离保护的反时限特性:直接用全周傅里叶算法进行阻抗计算;采用工频变化量阻抗继电器进行工作电压的计算;采用转矩的思想进行转矩的计算。 |