查询词典 sound velocity

The first explicit mention of sound velocity appears to be by Francis Bacon.

读到这里我想起在儿时玩过的类似游戏，计算行雷的位置。

Measuring sound velocity in the air using stationary wave method is discussed in this paper,phase comparison method and Lissajous figure method both could determine the wave length of ultrasonic wave.

1引言在大学物理实验教学中，测量空气中的声速用传统的共鸣管方法和超声波方法。

Can accurately measure the zero offset probe (School 0:00), sound velocity and the K value.

可准确地测量探头的零点偏移、声速和K值。

Our shock data and the gained recognition on dynamic response behavior of HDG is valuable for improving the precision of sound velocity measurements for metals and non-metals at pressures over the megabar range.

本文报道的重玻璃材料高压物性数据和序列相变认识对于发展反向加载技术、提高材料声速测量精度和适用压力范围具有实用价值。

The sound velocity is one of the most important acoustic parameter in ocean sonar.

声速是海洋声呐测量中最重要的声学参数之一。

sound velocity ; temperature ; stationary wave method ; ultrasonic wave

虽然用超声波测声速具有以上优势，但实验数据的精确度在一定程度上受到超声波信号发生器的稳定性、压电陶瓷换能器的效率、周围环境温度等因素的影响。

In this paper,the principle and primary results of measure ultrasonic sound velocity and attenuation coefficient by ultrasonic syntonic method are introduced.

1 前言各种介质的声学特性主要由声速、声衰减、声阻抗等参数来描述，这些量统称为介质的声学特征量。

It has also been confirmed by the measurement of ultrasonic sound velocity.

通过对其超声声速的测量，确认了此相变的存在。

The scattering intensity and the sound velocity of the acoustic phonon decrease with x.

实验还发现声学声子的散射强度和声速随Bi含量的增加而减少。

The simulation results show that there are many factors to influence the reverberation, each of them has different contribution to the reverberation, and the angles configurations and the characters of interface have main function, and the effect of the change of sound velocity on reverberation can be ignored.

模型仿真结果表明，影响双基地声纳混响的因素众多，每个因素在对双基地混响的贡献是不一样的，双基地角度的配置和界面性质变化对混响的影响很大，而声速的变化对混响的影响可以忽略不计。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。