1) sound energy decay
声能衰减
1.
In the measurement of random-incidence scattering coefficient by synchronized averaging of the impluse responses,the sound energy decay curve obtained by the backward integration of the squared averaged impulse will be influenced by the correlated components among these responses.
用脉冲响应同步平均法测量无规入射散射系数时 ,叠加后再经反向能量积分得到的声能衰减曲线 ,会受到不同脉冲响应中散射成分相关的影响 。
2) ultrasonic attenuation capacity
超声衰减性能
1.
That alloy is a light material with good ultrasonic attenuation capacity between 1—10 MHz.
研究了通孔多孔铝合金的超声衰减性能。
2.
The results show that it is a light material that have good ultrasonic attenuation capacity between 1 MHz and 10 MHz.
研究了闭孔泡沫铝合金孔结构参数对其超声衰减性能的影响。
3) Ultrasonic attenuation
超声衰减
1.
Pulse-echo based ultrasonic attenuation model for porosity test of carbon fiber composites;
碳纤维复合材料孔隙率的脉冲反射法超声衰减测试模型
2.
Ultrasonic attenuation coefficient of the spray-atomized and co-deposited 6061Al/SiCp composite;
用超声衰减法研究喷射沉积6061Al/SiCp复合材料的阻尼性能
3.
Ultrasonic attenuation technique is used to investigate a method to measure mass concentration of paper fibers in dilute pulp suspensions.
采用超声衰减技术研究了稀释纸浆悬浮液中纸纤维质量浓度的测量方法,讨论了稀释纸浆悬浮液中超声的衰减机理。
4) acoustic attenuation
声波衰减
1.
The acoustic attenuation of gas-containing sediment is primarily analyzed.
对含气沉积物声波衰减初步分析表明约在3。
5) sound attenuation
声衰减
1.
The effects of salts(KCl,NaCl,NaBr) dissolved in solution on the sound attenuation of water-soluble polymers in the process of dissolving at different frequency were studied in details.
详细研究了不同频率下水溶性高分子溶解过程中可溶盐(KC l、N aC l、N aB r)及EDTA对其声衰减效果的影响。
2.
In this paper, emphasis was paid to studying effects on the underwater sound attenuation of gradient polymer solutions.
文中详细研究了梯度高分子溶液在不同频率下,聚合物厚度及梯度结构的变化对反射声衰减效果的影响。
3.
The acoustical properties and specific heat of sample at low temperatures were studied, and the temperature dependences of modulus, sound attenuation and specific heat were obtained.
对其低温的声学和比热容性质进行了研究,得到了样品模量和声衰减以及随温度变化的规律。
6) noise attenuation
噪声衰减
1.
Discussion on noise attenuation methods in seismic data processing.
地震数据处理中噪声衰减方法的探讨
2.
Coniferous forest and evergreen broad-leaved forest had the best reduction effects and their noise attenuation values were also more 10dB.
针叶树林和常绿阔叶树林的减噪效果最好,噪声衰减值均大于10 dB;植物群落对噪声的减弱效果明显优于空旷地;建群种相同、林下层次多、植物种类丰富的群落对噪声的衰减效果优于林下无植被的群落;以落叶植物为优势种的群落在生长期对噪声的衰减值比落叶期高4~5 dB。
3.
The improved farmer algorithm optimizes the structure of original farmer algorithm,simplifying and improving the validity of noise attenuation.
通过对混有噪声的Henon序列进行仿真实验,仿真结果显示,改进后的Farm er算法能够提高噪声衰减的精度,降低与理想Henon序列的绝对误差。
补充资料：l/10衰减时间理论
分子式：
CAS号：
性质：又称Q10理论。即用微生物受热死亡后的数目降低到原先的1/10所需要的时间D来描述微生物的耐热性,在相同温度下灭菌,D值越大说明此微生物越耐热。D值可用下式求得：1n(1/10)=-KD；D=2.303/K,K为比死亡速率,s-1。不同的微生物有不同的微生物有不同的K值，它因温度的增高而增大。
CAS号：
性质：又称Q10理论。即用微生物受热死亡后的数目降低到原先的1/10所需要的时间D来描述微生物的耐热性,在相同温度下灭菌,D值越大说明此微生物越耐热。D值可用下式求得：1n(1/10)=-KD；D=2.303/K,K为比死亡速率,s-1。不同的微生物有不同的微生物有不同的K值，它因温度的增高而增大。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条