| ID | 原文 | 译文 |
| 12714 | 在列车侧，提出一种车顶电磁介质透镜结构，漏泄波导辐射信号可透过透镜直达车内用户，从而实现车载结构与漏泄波导间有效的、无缝的上、下行通信。 | Aiming at the problem of how to realVe effective and seamless communication between train and leaky waveguide, this paper proposes an access method in which an electromagnetic medium lens is installed on the train roof to directly achieve wireless coverage for passeners inside the train. |
| 12715 | 基于人工介质厚度与相位的定量关系来设计电磁透镜，使得电磁波透过透镜后从柱面波转化为平面波，从而实现更均匀的车厢内无线覆盖。 | Furthermore, ased on t be relationship between t be medium thickness and phase, the lens thickness is despned to transform cy i indrcal wave to plane wave, which can converge the propagaton direction and improve the antenna gain to achieve more uniform wireless coverage in the train. |
| 12716 | 利用2005—2007年广州、海口和重庆三个台站的fa\2数据,研究了 fa\2日变化、季节变化和 ’。F2随太阳活动的变化规律，以及空间天气事件如磁暴对F2的影响。 | In this paper, we use the critica l frequency of F2 layer (foF) data of three ionosonde observations at Chongqing, Guangzhou and Haikou to analyze the diurnal, seasonal and solar variations of foF2 , as well as the effects of space weather events such as magnetic storms on foFz. |
| 12717 | 结果发现：F2的日变化规律体现 在日出前出现最小值,海口和广州两站在14：00—16：00出现最大值，重庆站在12：00—14：00出现最大值% 春秋季’。 | The diurnal variation of foF2 shows a mmimum before the sunrise, and in Haikou and Guangzhou the maximum occurs nearby 14：00 to 16：00 loca l time, whlle in Chongqng the maximum occurs nearby 12：00 to 14：00 loca l time. |
| 12718 | F2均值高于夏冬季节,春季高于秋季,冬季高于夏季(重庆站不明显)%从2005年开始,临频值整体 下降，与太阳黑子数呈现正的线性关系%在2005-08-24开始的磁暴期间在磁暴的主相发生’oF2的正向扰 动，在磁暴发生的第二天’oF2整体呈现负向扰动。 | It is found that f°F2 value is at its maximum during equinoctial months (March, April, May, September, October, November) , and minimum during the summer months (June, July, August) , with intermediate values during winter months (December, January, February). Besides, f°F2 at spring equinox is larger than that in autumn which is not obvious in Chongqing.Overall foF2decreases since 2005 !onwards showing apositive correlation with solar activity. foF2variations during the geomagnetic stormcommencing 24 August 2005 with Dst=—184 nT are analysed. ’’F# shows a positive ionospheric storm effect on the first day of the storm and negative ionospheric storm effect on the next day. |
| 12719 | 综合以上信息可知，我国低纬地区可以划分为赤道异常区和非赤道异常区两个地区。 | In China low latitudes! it can be divided into equatorial anomaly region and normal region. In these two regions, the change rules of ’oF# are similar but still different. |
| 12720 | F2有所相似但仍有不同,应结合太阳活动具体分析。 | We should make a concrete analysis of the two regions combining with solar acivity. |
| 12721 | 文中提出并设计了一款应用于5G微基站的双频双极化电磁偶极子天线，工作带宽完整覆盖了长期演进(long term evolution, LTE)技术的主要频段和5G的全部中频段。 | A novel dual-wideband dual—polarized magnetc-electric (ME) dipole antenna for 5G microcell base station is proposed, the bandwidth of whi ch can completely cover the long term evolution(LTE) main band and 5G mid-band. |
| 12722 | 该天线首先采用正交放置的 渐变式$形馈电线对两个交叉放置的电磁偶极子馈电实现双频双极化，随后通过在电偶极子上添加H形缝隙有效扩展了低频段的带宽，最后创新性地引进具有电容性质的圆形寄生贴片将高频频点降低。 | By using a pair of orthogonal ME dipoles and $-shaped tapered cross feeding lines, the initial antenna achieved dual-band and dual—polarized. Then, four H-shaped slots, added in electric dipoles, effectively extend the lower impedance bandwidth. Finally, a circular parasitic patch with capacitive properties is innovativey oaded above the ME antenna, which obvious y reduces the high resonant frequency. |
| 12723 | 此外，利用一款添加金属围栏的反射板来改善天线增益和辐射方向图的稳定性。 | Meanwhile, a box-shaped reflector is employed to achieve stable gain and radiation pattern. |