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- Based on the Fresnel diffraction integral, the analytical expression for the field distribution of converging spherical waves passing through an annular aperture is derived and some special cases are discussed. 摘要基于菲涅耳衍射積分公式，推導出了會(huì )聚球面波通過(guò)環(huán)形光闌后場(chǎng)分布的解析公式，并討論了一些特殊情況。
- The mode field distribution of end-face, gotten from the experiment, is accordant with theory. 從圖像處理后得到的數據看，其端面模場(chǎng)的光強分布比較理想。
- We discuss the effect of these poles & wires on the electric field distribution of a HVAC transmission line by image method. 本文以靜電場(chǎng)的鏡像電荷法為依據;討論了500 kV 高壓交流傳輸線(xiàn)附近的電桿及線(xiàn)路對電場(chǎng)分布的影響;并考慮了線(xiàn)路對地絕緣和接地兩種情況.
- All guided modes in this PCF are nondegenerate.The field distribution of guided modes reflects the structural symmetry of the waveguide. 橢圓芯PCF中的模式均為非簡(jiǎn)并的，導模的場(chǎng)分布反映波導結構對稱(chēng)性。
- The near field distribution of the microwave radiator embedded in lossy media for uterus disease treament has been investigated in this paper. 以微波治療婦科疾病為研究背景,建立了醫用微波輻射器的場(chǎng)分布模型,分析了輻射器的近場(chǎng)分布特性。
- By using the theory of diffracting integral, the optical field distribution of plane waves passing through an axicon is derived. 利用衍射積分理論，導出平面波通過(guò)軸棱錐后的光場(chǎng)分布。
- This aberration may cause the degradation of the image of sample.We design a continuous phase filter and optimize the optical field distribution of SIL system. 我們設計了一種連續相位濾波器，該濾波器可以?xún)?yōu)化固體浸沒(méi)透鏡系統的光場(chǎng)分布。
- The static temperature field distribution of flanged joints was simulated by 3-D FEA,the results show that the calculative values accord well with data of the measurement. 利用3-D有限元法模擬了法蘭接頭的穩態(tài)溫度場(chǎng)分布,結果表明計算值與實(shí)測數據吻合較好。
- A cold model measurement system of the RFQ resonant cavity is introduced, which can measure the field distribution of cold model through bead-pull measurement. 根據諧振腔的微擾理論,采用小球微擾法,為射頻加速器建造中的冷模測量建立了一套自動(dòng)測量系統,實(shí)現了高精度、批量自動(dòng)化測量的要求。
- And the results show that a very useful guidance on the prediction of the magnet field distribution of GMM actuator and the further optimization design is provided. 研究結果對GMM轉換器的磁路計算和磁場(chǎng)分布規律的預測及結構優(yōu)化設計提供了理論依據。
- The distribution of the magazine is 2000. 該雜志的銷(xiāo)售量為2000份。
- The calculation result and the characteristics of the axial electric field distribution of the faulted insulator are described.Testing results at laboratory are given. 介紹了故障絕緣子軸向電場(chǎng)分布的計算結果和特點(diǎn)，并給出了實(shí)驗室檢測試驗的結果。
- Temperature field distribution of weldment ,which reflects complex welding heat process, is a basic on studying welding deformation, residual stress and so on. 焊件中的溫度場(chǎng)分布反映了復雜的焊接熱過(guò)程,是研究焊接變形、焊后殘余應力等狀況的基礎。
- This paper presents a new numerical method, which is based on boundary element method (BEM), for the computation of resonant frequency, external Q value and field distribution of the waveguide loaded cavity. 本文基于邊界元法(BEM),提出了一種新的計算波導加載諧振腔的諧振頻率、外Q值和場(chǎng)分布的數值計算方法。
- In order to improve temperature field distribution of ZL80 wheel loader s power gearshift gear-box,the paper researches the wheel loader s temperature field distribution in unit time. 為了改善ZL80型輪式裝載機的動(dòng)力換擋變速箱的溫度場(chǎng)分布狀況,對其單位時(shí)間內溫度場(chǎng)分布進(jìn)行了研究。
- They could not agree about the distribution of the profits. 他們對于利潤的分配意見(jiàn)不一致。
- According to the model of permanent magnet magnetic dipole, we have concluded the axial magnetic field distribution of square magnet and discussed the demagnetizing factor inside the magnet. 根據永磁的磁偶極子模型,推導了方形磁體的空間磁場(chǎng)軸線(xiàn)方向分布,并討論了磁體內的退磁因子。
- As an appoximate method,MPA is convenient and simple,however,it has more errors on propagation constants and field distributions of high order modes. 結果表明：計算量少、方便簡(jiǎn)單的MPA在高次模的傳播常數和場(chǎng)分布兩個(gè)方面都存在較大誤差。
- How about not the same F number, but the same in area of aperture? 兄臺的問(wèn)題，是問(wèn)當光圈實(shí)際大小不變，焦距和景深的關(guān)系吧。
- The manager tried to even out the distribution of work among his employees. 經(jīng)理把工作盡量平均分配給雇員。
