English translation for "背瓣"

episternites

Related Translations:

咽瓣:  pharyngeal flap

唇瓣:  1.[植物学] lip; labellum (兰科植物)2.[动物学] (某些婉足动物的背瓣遮盖主突的外突板) flabs; chilidium◇唇瓣环沟 pseudotrachea; 唇瓣基 hypochil; 唇瓣下部 hypochil; hypochillium

心瓣:  cardiac valveheart valveheart-matevalve of the heart

翼瓣:  alafly platepetalswing

孢瓣:  gonimolobe

上瓣:  epivalove

波瓣:  (波束) lobe; radiation lobe◇波瓣半功率宽度 lobe-half power width; 波瓣测定器 beam indicator; 波瓣宽度 lobe width; 波瓣区 lobe region; 波瓣顺序扫掠法 sequential lobing; 波瓣转换 lobe switching; beam lobe switching; 波瓣转换开关

后瓣:  back loberear axis lobe

栅瓣:  [电磁] grating lobe◇栅瓣级数 grating-lobe series; 栅瓣图 grating-lobe diagram

瓣足:  lobe frotlobed foot

Example Sentences:

	1.	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 。
	2.	The radiation pattern of the antenna is more rotationally symmetric , and a more reduction on the sidelobe levels of the antenna is achieved as compared to the antenna with the corrugated soft surface . in conclusion , in the present thesis both theoretical and experimental research works have been carried out intensively on patch antennas based on photonic - bandgap structures . it is shown that our photonic bandgap structures can greatly improve the performance of the patch antennas 该平面圆环结构软表面天线是在空气介质的皱褶圆环结构软表面天线的基础上改进得到，为了便于比较，我们首先研究了空气介质的皱褶圆环结构软表面天线，用fdtd方法并结合pml吸收边界条件对该天线的性能进行了研究，结果表明天线的带宽增加，天线的轴对称性得到了很大改善， e面和h面方向图的波束几乎重合，天线的旁瓣和背瓣受到很大的抑制。

Similar Words：

"背板线" English translation, "背板缘脊" English translation, "背板运送机" English translation, "背板总线数据传输速率" English translation, "背板榇砂造模法" English translation, "背半棘肌" English translation, "背包" English translation, "背包（自助旅行）者" English translation, "背包带太紧勒得慌" English translation, "背包电台" English translation