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2Â¥2010-03-07 16:49:25
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Сľ³æ:)(½ð±Ò+2):3q 2010-03-07 21:33
quanyu2939(½ð±Ò+3): 2010-03-08 20:23
Сľ³æ:)(½ð±Ò+2):3q 2010-03-07 21:33
quanyu2939(½ð±Ò+3): 2010-03-08 20:23
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No account is taken of the spatial frequencies of the recorded gratings which are not stated. Are they the same at 532 and 441 nm? If the angle between the recording beams is the same for both wavelengths, the effect of a reduction in scattering at 532 is offset by the effect of the longer diffusion distance ¹âÕ¤µÄ¿Õ¼äƵÂÊûÓп¼ÂǽøÈ¥£¬Õâ¸öƵÂÊÊDz»ÊǶÔ532ºÍ441nm²¨³¤Ò»ÑùµÄ£¿Èç¹û¼Ç¼¹âÊø¶ÔÁ½¸ö²¨³¤µÄ½Ç¶ÈÊÇÒ»ÑùµÄ»°£¬532nmµÄÉ¢ÉäЧӦ¾Í±»µÖÏûÁË£¬ÔÒòÊÇ532nmÓиü³¤µÄ´«²¥¾àÀë¡£ Ö±Ò룬ÎÒÒ²²»×ö¹âÕ¤·½ÃæµÄ¶«Î÷£¬ËùÒÔÒ²²»ÖªµÀ×îºóÒ»¸öЧӦµ½µ×ÊÇʲô£¬¹À¼ÆÊÇÒòΪ²»Í¬µÄ²¨³¤¶ÔÓ¦×Ų»Í¬µÄ¹âÕ¤ÖÜÆÚ£¬Èç¹ûÒ»¸öÌå²ÄÁÏÀïÃæÓÐÁ½¸ö²»Í¬ÖÜÆÚµÄ¹âÕ¤µÄ»°£¬³¤ÖÜÆÚ¹âÕ¤¿ÉÄܾͲ»»áÆð×÷ÓÃÁË¡£½ö½öÊDz²⣬²éÊé»òÕßÊǸúÀÏʦÉÌÁ¿¸üºÃ~ |

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