覆蓋變換 的英文怎麼說
中文拼音 [fùgěbiànhuàn]
覆蓋變換
英文
covering transformation-
At present, people usually use birefrigence and quasi - phase - matching methods to achieve higher effiency in the process of conversion. a significant advantage of quasi - phase - matching method is that the interaction is occurred through the largest element of the x ( 2 ) tensor ; the period of optical superlattice can be designed randomly, and any interaction can be matched without walk - off angle ; they are fitted to be used in frequency conversion of lower power especially. the quasi - phase - matching method has some advantages over birefrigence method, improving the efficiency of frequency conversion ; the range of frequency conversion covers its whole transperant wavelength
由於準相位匹配技術有其獨特的優勢，可以利用非線性光學晶體的最大二階極化張量，如ppln 、 pplt 、 ppktp用的非線性極化張量都是d _ （ 33 ） ，其有效非線性系數高出普通非線性光學介質（如bbo 、 lbo 、 ktp ）一個數量級，而且可以人為靈活設計調制周期，通過周期設計其頻率變換范圍可以覆蓋準相位匹配介質的整個透明波段，選擇無走離效應，解決了常規pm難以解決的問題，拓寬了非線性晶體的應用范圍，極大地提高了頻率轉換效率，已成為非線性光學材料和固體激光器的研究熱點之一。The first part deals with the construction of semisymmetric graphs and the second part classifies the edge - transitive regular coverings of the cube, whose covering transformation groups are iso - morphic to the elementary abelian p - groups
第一部分是關於半對稱圖的分類，第二部分是關于立方體邊傳遞的正則覆蓋圖的分類，其覆蓋變換群同構于初等交換p -群。With this method, in the present thesis, we will classify all the connected regular covering graphs of the cube satisfying the following two properties : ( 1 ) the covering transformation group is isomorphic to the elementary abelian p - group ; ( 2 ) the group of fibre - preserving automorphisms acts edge - transitively
本文中，我們用同一種方法分類立方體的正則連通覆蓋圖，並且滿足兩個條件，覆蓋變換群同構于初等交換p -群且保纖維自同構群是邊傳遞的。For a given finite connected graph f, a group h of automorphisms of f and a finite group a = z, du, kawk and xu ( see [ 6 ] ) get some new matrix - theoretical characterizations to classify all the connected regular coverings of f having a as its covering transformation group, on which each automorphism in h can be lifted
設為有限連通圖， h為它的自同構群的一個子群， a為給定一個初等交換p -群。杜少飛， kawk和徐明曜用矩陣的方法將的正則連通覆蓋圖進行了分類，其中以a作其為覆蓋變換群，並且h可提升。Then the article specifies the control principle of the infrared sensor, the dust warehouse detection, the collision detection, the floating switch, the speedometer, the edge - walking detection, the keyboard, the liquid crystal display as well as the vacuum motor, the brush motor, the driver motor and etc. in the software design aspect, through analyzing the link between the bottom hardware and path coverage planning algorithm, it actualizes pid adjustment algorithm for the robot ’ s straight walking, the coordinate transformation and computation of speedometer ’ s return value, providing the basis for the route coverage algorithm
然後，詳細說明了紅外傳感器，塵倉檢測，碰撞檢測，浮動開關，里程計，貼邊行走檢測、鍵盤、液晶顯示以及吸塵電機、毛刷電機、主動輪驅動電機等控制原理。在軟體設計方面，通過分析底層與路徑規劃演算法的銜接，實現了機器人直行pid校正演算法、里程計返回值的坐標變換及計算等演算法，為路徑覆蓋演算法提供依據。How to realize it is the necessary stage of bind restoration of remote sense image processing. this paper introduces a way to remove the effects of cloud by frequency transform. here, information of cloud cover is removed by high - pass filtering and information of background is enhanced by homomorphic filtering and spatial - frequency analysis
本文結合中巴資源衛星地面應用系統圖像應用處理分系統「課題的需要，採用數字圖像變換的方法來去除無輔助信息的遙感圖像薄雲覆蓋，通過對薄雲覆蓋的遙感圖像進行變換域處理，進行高通濾波去除雲覆蓋所在的低頻信息，通過同態濾波並對圖像進行空頻分析來增強圖像背景。分享友人