求翻译：漏泄电缆就是在普通同轴电缆的外导体上周期性开设槽孔，电磁波在漏泄电缆中纵向传输的同时也可以通过开设的槽孔向外辐射电磁波，形成连续的电磁场；是什么意思？

Leaky coaxial cable is in normal cyclical opening slot on the coax outer conductor, vertical transport of electromagnetic wave in leaky coaxial cable is also offering a slot to the radiation of electromagnetic waves, form a continuous electromagnetic field;