把钢中横波折射角为50°的斜探头移至横波声速为2.17x103m/s的材料上,则

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问题 把钢中横波折射角为50°的斜探头移至横波声速为2.17x103m/s的材料上,则折射角约为()A.53°B.35°C.31°D.47°

选项 A.53°
B.35°
C.31°
D.47°

答案 C

解析
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