美 英 un.前后比 英汉 网络释义 un. 1. 前后比
ratio n.[C] 比率,比例 Back ad. 向后,在后;回,回原处;以前 ; n. 背,背部;背后,后面 a. 后面的 vt. 支持 back n. 1. 后部;后面;背面;反面 2. 人体的背部,脊椎骨;动物的脊背 3. 后襟 4. 椅子的靠背;椅背 5.(足球等)后卫. adj. 1. 位置在后的 2. 以前的,过去的 back to back ...
front-to-back ratio 英 [frʌnt tu bæk ˈreɪʃiəʊ] 美 [frʌnt tu bæk ˈreɪʃioʊ]前后比；（定向天线的）方向性比; 方向性比；前后不一致比
释义 见:方向性: 方向性比 front-to-back ratio; 随便看 alpine tundra alpine vegetation alpinin alpinine alpinism alpinist Alpino salami alpland ALPS Alps ALPURCOMS ALR already already-issued bond alright a.l.s. ALS Al sace alsad Alsatia alsatian wine alsbachite alseco painting alsex alsgraff...
The radiation characteristics of this antenna are very good, with afront-to-backratio >18db and cross polarization level <-18db. 文章介绍了一种中心频率为3GH的微带准八木天线,这种天线的辐射性能非常好,其前后比大于18dB,交叉极化电平小于-18dB,这些性能都已经通过FDTD仿真得到验证。
A design approach to a novel planar self-balanced, wide beamwidth magneticdipole antenna with high front-to-back ratio (FBR) is advanced. The principlefor FBR enhancement is revealed at first. As seen, the back-lobe level can beeffectively suppressed by adjusting the unbalanced current ratio (...
The antenna has a directional radiation pattern with around 9 dBi front-to-back ratio and-10-dB cross-polarization levels along the boresight direction. ... AT Mobashsher,A Abbosh - 《IEEE Antennas & Wireless Propagation Letters》 被引量: 21发表: 2014年 A dual-polarization wideband circular...
The stripline aperture coupling structure is introduced to lower the back radiation of a broadband low-profile metamaterial mushroom antenna. Compared to the feeding structure of a microstrip line aperture coupling, the stripline aperture coupled mushroom antenna exhibits a front-to-back ratio enhancement...
沪江词库精选front-to-back slope是什么意思、英语单词推荐 前后坡度 相似短语 front to back slope 前后坡度 front to back registration 【电】 前至后的登记 front to back effect 前后不一致的影响,前后影响 front to back ratio 正反向比 front slope 前坡,悬崖坡 back slope 反坡,倾向坡,背坡...
front to rear ratio 前后比 front to back slope 前后坡度 相似单词 back to front 前后颠倒的,本末倒置的 front n. 1.(常用the front)正面,前面;正前方或前面的位置,最靠前的位置或地方 2.(常用the front)海边,湖边,海滨 3.(常用the front)(战争中)前线,前沿 4 BACK 背脊,背部[C] Back ad...