駐波波導 的英文怎麼說
中文拼音 [zhùbōbōdǎo]
駐波波導
英文
standing waveguide-
Abstract : it is observed that the sommerfeld ' s formula for a progressive spherical wave is not covariant with respectro the rotation of the coordinate system. it contains complex partial waves that are not physical. the standing wave representation of the same formula is shown to be covariant and physical. it is applied to solve the boundary value problem of fiber optics. the radiation modes as well as the guided normal modes are obtained in closed forms. the intensity distribution in various modes is obtained. it is remarked that the mode of critical refraction is missing
文摘:說明了球面行波的索末菲公式在坐標轉動下不協變.證明了球面波的駐波表示是協變的，因而是一個物理的關系式，故適用於圓柱坐標中各類波動方程的定解問題.作為一個例，應用於光纖光學，導出了受導簡正模和輻射模的表達式，以及各模式的強度分佈Abstract : a new waveguide which can change the wide wall of a rectangular waveguide into a symmetric arc wall is named as a cam - rectangular waveguide. comparing to sectoral waveguide, the new waveguide has the same voltage characteristics and is easier to be produced and fixed. an approximate formula of the dominant mode fields and the normalized conductance of a longitudinal resonant slot cut in the curved wall of a cam - rectangular waveguide are given. a resonant slot linear array in c & x band is designed, in which the slot voltage distribution is equiphase and the input is matched. the input voltage stationary ware ratio and the h - plane pattern of the antenna are measured. the experimental results show the conformance with theoretical results
文摘:把常用的矩形波導一個寬面改成圓弧形構成的波導稱為圓突-矩形波導.這種波導與扇面波導相比：電性能相當；波導管結構更加簡單，容易加工，便於安裝.文中給出圓突-矩形波導中主模場，圓曲面上縱向槽歸一化諧振電導近似公式.設計了c和x波段波導曲面縱向諧振縫隙線陣，縫隙電壓相位為同相分佈，輸入端匹配.實際測量了天線輸入端電壓駐波比和h面方向圖，理論與實驗相吻合A analysis of these effect to the pattern is presented. in the mean time, the method of correcting the phase errors is given by shortening or lengthening the section of sinuous feed line between couplers from the normal value. 6. the reflection characteristic of a serpentine is analyzed where the coupler is replaced by the equivalent of two ports loss network
提出了用有耗二埠網路來等效波導耦合器的方法，對由耦合器、饋電波導和波導彎頭級聯的慢波線系統的駐波特性進行了分析計算，針對慢波線在設計測射頻率上大反射問題，討論了多種解決辦法。Those present at the meeting included : chen zhixin, director, and xu yubo, section chief of the division of american and oceania affairs in the department of international cooperation of the ministry of agriculture ; kevin chen, manager with the beijing project office of sfagm ; resident project coordinators at the county level ; xiao xianggui, director of the division of international cooperation of the sichuan department of agriculture ; diao yunhua, head of the general station of animal improvement of sichuan province, and ; officials in charge of the relevant aspects of the pilot projects in zizhong neijiang, santai mianyang and pengzhou chengdu at the municipal or county level, totaling 21
」四川省示範項目2005年總結及2006年計劃工作會議在成都蜀蘭酒店成功舉行。農業部國際合作司美大處陳植新處長徐玉波科長， 「小農戶」項目北京辦公室陳志鋼經理以及駐縣項目協調員，四川省農業廳國際合作處肖祥貴處長，四川省畜禽繁育改良總站的刁運華站長，資中內江三臺綿陽彭州成都示範項目的市縣主管領導等21人出席了會議。Warning : standing wave ratios in excess of 2 : 1 may cause transmitter damage
警告：當駐波比超過2 : 1可能會導致發射部件受損。In this thesis, a semi - classical model of the force on an atom is used to describe the motion of a two - level atom interacting with a standing wave laser field. the velocity dependent force and momentum diffusion are derived through optical bloch equations by using the matrix form of the continued fraction technique. by investigating the dynamic properties of atoms in laser field, we can control and manipulate the mechanical motion of an atom
本文利用半經典理論，從二能級原子在激光駐波場中所滿足的運動方程出發，推導出密度矩陣元所滿足的遞推關系，利用矩陣連分數方法求解出密度矩陣元，從而求出依賴于原子運動速度的光壓力與動量擴散系數，通過討論原子在激光場中的動力學行為，為原子在激光場中被囚禁、形成原子列陣以及可控制的量子態，從而為量子信息處理提供理論基礎。In the storm, the part on surface layer of the underlying bed will produce the liquefaction, the absolute standing wave that form the front of the structure may bring 6. 16 meter depth of the liquefaction, so the foundation of structure will lose part of the supporting force, the structure will slide in this situation. that is to say, because of the foundation partly liquefaction, the exist of soft layer and the component force of gravity, the structure slide further to the basin and collapse, which leads to disastrous consequence
在強暴風浪下，底床表層1 . 75米以上均有可能產生液化現象，而在構築物前形成的完全駐波，甚至能夠造成6 . 16米的液化深度，構築物地基部分失去支持力，將直接導致構築物的滑動，也就是說，在地基部分液化、軟弱層的存在以及構築物沿坡重力分力的共同影響下，構築物將向「盆」底方向發生更大的滑動，甚至可能發生倒塌。The impedance match must be extremely good because at the frequency that the antenna beam ~ vork on the broad - side position, the reflcctions from all the bends add in phase to produce a large input vswr. in addition, a poor design of thc bends leads to high - power breakdown
慢波線中使用了大量的波導e面180彎頭，系統對其駐波特性提出極高的要求，文中用高頻模擬軟體（ hfss ）優化設計了波導e面180彎頭。分享友人