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ÇóÖú·Òë¾ä×Ó£ºThe distribution of computer power to individual instruments has led to the widespread use of methods such as the Fourier transform to produce new techniques: Fourier transform infrared(FTIR) and pulsed nuclear magnetic resonance spectroscopy. ÓÈÆäÊÇdistribution²»ÖªµÀÈçºÎ·Ò룿 |
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andrewlu
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6Â¥2009-08-08 14:09:55
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#2˵µÄ²î²»¶à£¬°á¸öÒÎ×Ó°ïÖúÄãÀí½â The Fourier transform, in essence, decomposes or separates a waveform or function into sinusoids of different frequency which sum to the original waveform. It identifies or distinguishes the different frequency sinusoids and their respective amplitudes. 1965£¬R.R.ERNST·¢Õ¹ÁËÕâÖÖʹµÃ²¨Æ×Ò×ÓÚ·ÖÎöµÄÊýѧ±ä»»·½·¨ 1970s£¬¼ÆËã»úµÄÆÕ¼°¼°Ó¦ÓÃʹµÃÕâÖֱ任±äµÃ·½±ã¿ì½Ý ¸µÀïÒ¶±ä»»µÄºìÍâºÍNMRÆ×ÔÚ30ÄêǰËãÊÇм¼Êõ¡£¡£¡£ [ Last edited by andrewlu on 2009-8-8 at 11:59 ] |

3Â¥2009-08-08 11:56:19
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