上天线的英文

• upper antenna

• "上天"英文翻译    Heaven; Providence; God go u ...
• "线"英文翻译    thread; string; wire
• "车上天线" 英文翻译 :    over car antenna; over-car antenna
• "地上天线" 英文翻译 :    terrestrial antenna
• "车上天线,车载天线,汽车天线" 英文翻译 :    car antenna
• "上天" 英文翻译 :    1.(上苍) heaven; providence; god2.(升到天空) go up to the sky; fly sky-high 人造卫星上天。 a man-made satellite has been launched. 又一艘宇宙飞船上天了。 another spaceship has gone up
• "平均地表面上天线高度" 英文翻译 :    antenna height above average terrain
• "水平面以上天线高度" 英文翻译 :    height calculation above sea level
• "捧上天" 英文翻译 :    praise sb. to the skies
• "上天的" 英文翻译 :    heavenly
• "上天极" 英文翻译 :    elevatek pole
• "上天堂" 英文翻译 :    touch the sky
• "天线" 英文翻译 :    antenna; aerial; antenna wire; air wire
• "把你捧上天" 英文翻译 :    lesson paying compliments
• "村上天皇" 英文翻译 :    emperor murakami
• "荡秋千,飞上天" 英文翻译 :    swing to the sky
• "感谢上天" 英文翻译 :    all that i'm allowed
• "海上天然气" 英文翻译 :    offshore gas
• "后村上天皇" 英文翻译 :    emperor go-murakami
• "鸡毛飞上天" 英文翻译 :    a chicken feather flying up to heaven -- to do sth. never done before
• "将…捧上天" 英文翻译 :    lay 1
• "康保 (村上天皇)" 英文翻译 :    koho (era)
• "猫儿上天堂" 英文翻译 :    heavenly puss
• "排队上天堂" 英文翻译 :    for roseanna; for the love of roseanna
• "捧上天去" 英文翻译 :    to praise to the skies

• A patch antenna with air holes in the substrate has been designed . the finite - difference time - domain ( fdtd ) method together with the perfectly matched layer ( pml ) boundary treatment has been used to study the performance of the antenna . it is shown that the surface waves are significiently suppressed , the frequency bandwidth is improved , the sidelobe levels are reduced and consequently the gain in the forward direction is improved by 14 db ( about 4 db higher than the value reported previously )
  设计了一种基底钻周期圆孔结构的电磁(光子)晶体贴片天线，用fdtd方法并结合pml吸收边界条件对该天线进行了研究，结果表明本文所设计的基底钻孔型电磁晶体贴片天线取得了多方面的性能改善，与普通天线相比，基底中的表面波受到很大抑制，天线的带宽增加，远场方向图上天线的旁瓣和背瓣被明显削弱，向前辐射的增益由原来的12db增加到26db ，增加了14db ，比文献上报道的gonzalo等人的研究结果提高了4db 。