垂直入射时,若Z1>Z2(即钢材水浸探伤时工件底面的钢/水界面),则钢/水界面上声压透射率为()。A、(Z2-Z1)/(Z1+Z2)B、2Z2/(Z1+Z2)C、4Z1×Z2/(Z1+Z2)2D、[(Z2-Z1)/(Z1+Z2)]2
垂直入射时,若Z1>Z2(即钢材水浸探伤时工件底面的钢/水界面),则钢/水界面上声压透射率为()。
- A、(Z2-Z1)/(Z1+Z2)
- B、2Z2/(Z1+Z2)
- C、4Z1×Z2/(Z1+Z2)2
- D、[(Z2-Z1)/(Z1+Z2)]2
相关考题:
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