invisible spectrum 中文意思是什麼

invisible spectrum 解釋
不可見輻射譜
  • invisible : adj 1 看不見的，無形的。2 不顯眼的，微小得看不出的。3 不露面的，謝絕來客的。4 未列在公開賬目上的...
  • spectrum : n. （pl. -tra ）1. 【物理學】譜，光譜；波譜；能譜，質譜。2. 【無線電】射頻頻譜；無線電（信號）頻譜。3. 【心理學】（眼睛的）余像；殘像。4. 〈轉義〉范圍，幅度；（連續的）系列。
  1. Like a deity, radio spectrum is invisible, omnipresent and commands awesome power

    無線電波像神明一樣，無法看到而又無處不在，並擁有讓世人敬畏的力量。
  2. Then, based on the theory of discrete fourier transform, discrete cosine transform and discrete wavelet transform, two invisible image watermarking schemes in transform domain are proposed, one is circular symmetric spread spectrum digital image watermarking based on chaotic sequences, the other is the hybrid image watermarking based on wavelet decomposition and discrete cosine transform. finally, the good performance of the two algorithms is verified by some common image processing and attack experiments

    在分析了dft 、 dct 、 dwt的理論與演算法的基礎上，提出了兩種基於變換域的圖像隱形水印方案? ?基於混沌序列的圓對稱擴頻水印方案和基於小波分解和餘弦變換結合的水印方案，並通過一些常見的圖像處理及攻擊實驗驗證了這兩種演算法生成水印的性能。
  3. These heros conceal themselves invisible in the visible range of the spectrum, but they were visible in the near infrared range

    這些天體在可見光波段無法見到，只在近紅外線波段才能被記錄下來。
  4. Of or relating to the range of invisible radiation wavelengths from about4nanometers, on the border of the x - ray region, to about380nanometers, just beyond the violet in the visible spectrum

    人為地輻射或反向輻射電磁波，使一段特定的無線電波譜的可用性削弱，而這一波譜段是由敵人的通訊或雷達所使用。
  5. The invisible infrared spectrum is also sensed by the multispectral scanner

    看不見的紅外光譜也能被多光譜掃描器辨出。
  6. The fragments, preserved between sheets of glass, respond to the infra - red spectrum - ink invisible to the naked eye can be seen and photographed

    紅外線譜把這些保存在玻璃板之間的殘片上肉眼無法識別的墨跡顯現出來，並拍成照片。
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