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- coefficient of sound damping 声阻尼系数
- A new type of sound absorbing material was made from super-strength gypsum and glass fiber and the sound absorp-tion coefficient of the material was tested by standing wave tube method. 以高强石膏为主要原料,内掺玻璃纤维,在发泡剂的作用下,制备出一种新型多孔吸声材料,采用驻波管法测试材料的吸声系数。
- temperature coefficient of sound velocity 声速的温度偏微熵
- Report on the Determination of Sound Absorption Coefficients of a Renhurst Rippletone Ceiling System in a Reverberation Room. 怡谱佳吊顶声学混响室法吸音系数报告。
- When did the first measurement of the speed of sound take? 第一次测量声速是在什么时候?
- Every paragraph is a distillation of sound judgment. 每段话都是正确判断的结晶。
- REFLECTION AND TRANSMISSION COEFFICIENT OF SOUND WAVE ON INTERFACE 声波在界面上的反射和透射系数
- Water has a variable coefficient of expansion. 水的膨胀系数是可变的。
- Airliners in service at present cannot fly faster than the speed of sound. 目前供使用的客运机飞行速度不能超过音速。
- Characterized by high volume and intensity. Used of sound. 大声的以高音量和强烈为特征的。用于声音
- Water is variable in coefficient of expansion. 水的膨胀系数是可变的。
- Our teacher has mutation of sounds suddenly. 我们的老师突然语音发生了变化。
- Functional coefficient of biological cycle: FCBC. 生物循环功能系数。
- Also ow coefficient of surface friction. 较小的表面摩擦系数。
- Mach two equals twice the speed of sound. 二马赫相当于声速的二倍。
- In 3xy,3 is the coefficient of xy. 在3xy中,3是xy的系数
- His distinction of sound is excellent. 他辨别声音的能力很强。
- In 3xy, 3 is the coefficient of xy. 在3xy中; 3是xy的系数.
- Wood is a poor conductor of sound. 木头是声音的不良导体。
- A device for measuring the speed of sound in water. 速度计,速度表用于测量声音在水中的速度的仪器