AB = 0.5 * c/f * vf1
c = ¥ú³t±`¼Æ ( 299,792,458 m/s ) f = ³]p¤Ñ½u®Éªº¤¤¤ßÀW²v¡@(¥HHz¬°³æ¦ì) vf1 = ³æ¤@µ´½t¾É½uªº³t«×±`¼Æ (¥»¤H¥Î0.95) (³o¬O¤Ñ½uªº®¶¤l¡A¬O¥Ñ¥¿Å¶Ç¿é½uBDEG³¡¥÷ ªº¨ä¤¤¤@¥b¥Ó®i¥X¨Ó¡A¸gװŦӦ¨) | ||
BD = EG = 0.25 * c/f * vf2
vf2 = ©Ò¨Ï¥Î¥¿Å¶Ç¿é½uªº³t«×±`¼Æ (¤@¯ë±`¥Îªº¢²¢¯¢¯¼Ú©i¥¿Å¶Ç¿é½u³£¬O¥Î polyethylene§@µ´½t§÷®Æ¡A±`¼ÆÀ³¬O0.82¡A ¤]¦³¥t¤@¸û¤Ö¨£ªº«~ºØ¬O¨Ï¥Î§Oªºµ´½t§÷®Æ (§Ú¤ñ¸û³ß¥Î)¦Ó±`¼Æ¬O0.85ªº) | ||
CD = EF
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