The water sound speed and temperature can be calculated by measuring Brillouin scattering frequency shift.
借助测量水体布里渊散射的频移，可得到水体声速或温度。
The result shows that the frequency shift of Brillouin scattering light is scarcely influenced by air pressure and vapor pressure, and greatly affected by air temperature.
结果表明。布里渊散射光频移受大气压、水汽压的影响很小。而受大气温度的影响很大。
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