排序方式: 共有9条查询结果,搜索用时 15 毫秒
1
1.
从已得的F_(113)、CCl_4及其混合液体的声速经验公式,计算了F_(113)、CCl_4及其混合液体的声速.绘出了定混合比下的声速与温度的关系曲线和定温度下的声速与混合比的关系曲线.给使用这些声速者提供参考. 相似文献
2.
The focused liquid-filled sphere can be used for a variety of purposes,for example,measure-ment of underwater sound,test and calibration of underwater sound equipment and training of pro-fessional personnel,etc.Work in the past was done only in the case of short pulse,whereas longpulse is usually used in practice. In this paper the focused gain for the focused liquid-filled sphere as a function of frequencywas investigated for different pulse lengths.Equations for outstanding gain differences were derived,and relevant experiments were done.Experimental results are in agreement with theoretical calcula-tion.We have come to the conclusion that in order to obtain larger target strength and better fre-quency response we must raise the short pulse focused gain g_s of the liquid-filled sphere as muchas possible. Experiments of focused gain as a function of wall thickness were done;the experimental resultshows that wall thickness has a clear influence on the focused gain and the frequency responsefor the focuse 相似文献
3.
充液聚焦球内混合液的混合比是充液聚焦球的性能参数.本文给出了混合液比例变更的计算方法,最大限度地利用了原混合液,在充液聚焦球的使用上可获得经济效益. 相似文献
4.
从已得的F113、CCl4及其混合液体的声速经验公式,计算了F113、CCl4及其混合液体的声速.绘出了定混合比下的声速与温度的关系曲线和定温度下的声速与混合比的关系曲线.给使用这些声速者提供参考. 相似文献
5.
6.
7.
本文叙述了充液聚焦球内低声速液体的声速测量,测得了声速与温度、混合比的关系曲线。用Wood混合液声速公式和测量结果导出了低声速液体的声速与温度、混合比的经验公式,解释了测量声速曲线和公式声速曲线出现的差异,本文对充液聚焦球内低声速液体的设计提供了实验基础和理论依据。 相似文献
8.
9.
1