1·Newton had discovered the isothermal velocity of sound in air.
牛顿发现了在空气中恒温声音的速度。
2·According to certain research, the spread velocity of sound waves has nothing to do with the speed of the ripples.
研究表明，声波在同一介质中的传播速度和波源的速度无关。
3·Objective: Study the influence of parameters such as attenuation coefficient, velocity of sound, and temperature of medium on focusing sound field.
前言：目的：研究声衰减系数、声速、温度等媒质参数对声聚焦的影响。
4·The experiment shows: the change of the velocity of sound through normal density alit is regular and directly proportional to the strength of alit;
结果表明：在正常密度水泥石实验中一般声速反应较规则，基本与强度正相关；
5·A new method of measuring the velocity of sound in the atmosphere is proposed, which USES fixed journey system, comparing to that used varied journey system before.
提出用固定行程系统测量空气中声速的新方法，与以往所用的变化行程系统进行比较。
6·If you go much faster, the center of lift moves back on the wing, pushing the nose down and increasing velocity, until you soon approach the speed of sound.
如果飞机飞的太快的话，升力的重心就会从机翼转移到前半部机身上，飞机就会下降，速度会接近音速。
7·However, the flight still managed to return 139 seconds of aerodynamic data at a velocity between 17 and 22 times the speed of sound, Darpa said.
然而，Darpa表示，在以17到22倍音速飞行的状态下，飞机还是回传了139秒的空气动力学数据。
8·By the time he passed four thousand feet he had reached terminal velocity, the wind was a solid beating wall of sound against which he could move no faster.
他穿越四千英尺的高度时，已经达到极速，呼啸着的海风就像一堵坚实的墙，拦在前面，使他无法以更快的速度前进。
9·In this paper, the principle and primary results of measure ultrasonic sound velocity and attenuation coefficient by ultrasonic syntonic method are introduced.
本文介绍利用超声共振法测量声速和声衰减系数的原理及自来水和乙醇的测量结果。
10·The equation of displacement wave and sound pressure wave in the sound velocity experiment are derived. And their relation is analyzed.
推导了声速测定实验中合成声场的位移波动方程、声压波动方程以及两者之间的关系。