diffraction region 中文意思是什麼

diffraction region 解釋
繞射區
  • diffraction : 分解
  • region : n. 1. 地方，地域，地帶；地區；行政區，管轄區，區；左近，鄰近；（大氣、海水等的）層，界，境。2. 【解剖學；動物學】（身體的）局部，部位。3. （學問等的）范圍，領域。4. 〈罕用語〉天空。
  1. At present greco is regarded as one of the most valuable methods of radar cross section ( rcs ) computation in the high - frequency region. depending on these conditions, several researches have been completed in this paper : firstly, calculating rcs of complex conducting targets has been accomplished by greco method. the high - frequency rcs of targets are obtained through physical optics ( po ) and incremental length diffraction coefficients ( ildc ) respectively

    本論文做了以下研究工作：首先，實現了運用greco方法計算了高頻區理想導體復雜目標的雷達散射截面（ rcs ） ，分別應用了物理光學法（ po ）和增量長度繞射系數法（ ildc ）計算了目標的面元和棱邊的電磁散射，最後綜合面元與棱邊的散射效應得到目標的總rcs 。
  2. The land clutter is useless signals for target detection caused by land terrain. the multipath effect is some kind of interference which is caused by wave reflection on terrain. the diffraction effect is the phenomenon of wave propagation into shadow region

    地雜波是由地面散射引起的對目標探測無用的信號;多路徑是由電磁波在地面反射所引起的干涉;衍射則是電波繞射傳播到遮蔽區的現象。
  3. Calculations of path - differences in different cases have been analysed. calculations of propagation factor in interference region, diffraction region and transition region has been studied. method of determination of transition region is introduced

    研究了多路徑和衍射的產生機理，分析了不同地面時路徑差的計算方法，分析了地面反射系數的計算方法以及衍射區和過渡區方向圖傳播因子的計算過程，最後闡述了過渡區的判斷方法。
  4. The materials were characterized by room - temperature x - ray diffraction ( xrd ), scanning electron microscopy ( sem ) and ac - impedance spectroscopy. firstly, the region of the single - phase, cubic - perovskite, the two - phase, cubic - perovskite and lasrgao4 or cubic - perovskite and lasrga3o7, and the three - phase, cubic - perovskite and lasrgao4 and lasrga3o7, shown in the region of the doped composition was determined from room - temperature xrd of the prepared materials

    通過對所制備的材料進行xrd分析，在摻雜成分區作出了單相立方鈣鈦礦結構相區、兩相（立方鈣鈦礦結構和lasrgao _ 4或者立方鈣鈦礦結構和lasrga _ 3o _ 7 ）區以及三相（立方鈣鈦礦結構、 lasrgao _ 4和lasrga _ 3o _ 7 ）區。
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