【摘要】 本文通过有机玻璃和水中纵波声速与温度的关系来计算水浸聚焦探头的焦距随环境温度的变化。结果表明:探头的焦距随着环境温度的升高而明显变大,基本上是线性变化关系。更多还原

【Abstract】 Variation of focal distance of immersion focusing typoe probe with environment temperature is calculated on the basis of the relations between temperatures and the re locities of longitudinal waves in plexiglass and water. Experimental results show that the larger temperature.the more remarkable of the focal distance of probe.更多还原