| 摘要 |
FIELD: measuring technique. ^ SUBSTANCE: method comprises emitting acoustical signal into the material to be investigated, receiving the signal of the back scattering, measuring the duration of the signal of the back scattering, and determining temperature from the empirical dependence obtained in advance. The period, duration, frequency, power, and direction diagram of the signal are determined by the characteristics of material. ^ EFFECT: enhanced precision. ^ 4 cl, 2 dwg
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