2、斜入射声波的入射、反射和折射 Ⅱ PIC1 p2c2 0 p sssssssssssssssssgsdsE sassnasnondenaot p sine sine r sint 02、斜入射声波的入射、反射和折射 Ⅰ ρ1 c1 Ⅱ ρ2 c2 pi pr pt 0 θi θr θt sinθi sinθt sinθr = = c1 c1 c2