本文采用三线圈结构，一个激励线圈，两个检测线圈。
Three coils are used in the experimental device, one is used for transmitter coil, the other two used as receive coils.
通过研究与比较单线圈、亥姆霍兹线圈、三线圈的磁场，得出三线圈的磁场在均匀性和强度上均超过了单线圈和亥姆霍兹线圈。
In this paper, a triple-coil magnetic field is designed, which is better than Helmholtz coil not only in uniformity but in intensity.
该机可进行双线、三线多线并绕或扁铜线绕制，使电压互感器二次线圈采用机械绕制的问题得到彻底解决。
The machine can perform two-wire, three-wire and multi-wire parallel winding or flat copper wire winding to completely resolve the mechanical winding of voltage transformer secondary coils.
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