| 1. | Boundary integral equation of electromagnetic field with line current element of external source 存在外源线电流元的电磁场边界积分方程 |
| 2. | The 3 - d vector and pattern of electromagnetic field and power density on a sphere from an array of time harmonic current 弦变线电流阵列在球面上电磁场及功率密度流之时变向量与三维场形。 |
| 3. | Each segment of line current can be approximated as a hertzian dipole if each segment is much smaller then a wave length 因此任意线电流在三度空间之三维向量电磁场即可以赫芝电偶极完整之远场及近场近似合成之。 |
| 4. | The near and far electromagnetic field are synthesized by summation of the electromagnetic field of short current segments or hertz dipoles 以很多小段赫芝偶极之完整电磁场合成一任意线电流之近场与远场电磁场。 |
| 5. | The authors first infered the boundary condition for line source , then realised the forward calculation with finite - difference method 针对垂直有限线源,首先推导了线电流源的边界条件,利用有限差分实现了三维地电场的正演。 |
| 6. | Neutral current neutral current is the current that flows in the neutral leg of a paralleling system . often , this term is used in reference to circulating currents or cross currents 零线电流零线电流指的是通过并联系统零线的电流,在谈及环流电流或者交叉电流时常会提到这个术语。 |
| 7. | According to biot - savart law , the general expression of magnetic field distribution generated by circular current in space has been calculated in this paper , which further discusses the magnetic field in the plane , the central axis and the far space 摘要直接由毕奥萨伐尔定律的计算公式,在更为普遍的情况下,计算出了圆形线电流在全空间的磁场分布,并进一步讨论了其在中心轴线上、平面内及远区的磁感应强度。 |
| 8. | Current sensors play a very important part in the on - line insulation monitoring of electric power transmission . generally they are used to measure leakage current of ground wire . at present , use current transformer as insulation monitoring current sensor mostly 电流传感器在电气设备绝缘在线监测系统中占有重要的位置,它一般通过检测设备接地线电流来监测泄漏电流,目前多采用电流互感器作为绝缘监测用电流传感器。 |
| 9. | An arbitrary shaped line current on a horizontal plane is divided into many small line segments and approximated by hertzian diploes , then both the near and far em - field of the line curennt is approximated by the summation of the complete near and far fields of hertz dipoles 水平面上任意形状线电流分割为许多小段之电流,每一小段之电流近似为赫芝偶极,则在三度空间任意座标平面上无论远近之电磁场即可以赫芝偶极之远近完整电磁场加总合成近似之。 |
| 10. | For a x - directed line current with lengh much smaller than a wave length , the e - field pattern on coordinate planes in 3 - d space in the region from much smaller than line length to one or two wave length , the synthesized pattern by summation of the field of many line segments of hertz dipoles is independent of the number of segments , i . e . same field as a single hertz dipole 以水平面上三角形甚小于波长线电流为例,分割为若干小段之赫芝偶极所加总合成在三度空间任意座标平面上距离从甚大于线长到一两个波长区域之电场场型与分割小段数量无关,即等同于一单一赫芝偶极之场型。 |