1) Stand wave in the tube
管内驻波
2) standing-wave duct
驻波管
1.
A measurement system for standing-wave duct is designed, and a self-made two-layer perforated-panel structure is tested.
设计并搭建了驻波管测试系统,利用基于四传感器的传递函数法对自制的双层穿孔板结构进行了测量。
3) Standing wave tube
驻波管
1.
Least square method in the standing wave tube is discussed in this paper and its error is analysed in detail.
对驻波管最小二乘法(LSM)进行了讨论和误差分析,并与双传感器传递函数法(TTP)进行了比较。
2.
Based on the test technique of standing wave tube with double microphones, a four-sensor method is developed.
同时,将双传声器驻波管测量材料声阻抗的原理,推广到四传声器法测量压缩机消声器的传声损失。
4) standing wave tube method
驻波管法
1.
Using the standing wave tube method,it carried out experimental study of different parameters′ influence on metal rubber′s sound absorption and noise reduc.
本文分析了金属橡胶作为多孔吸声材料的结构特性、一般物理性能及吸声频率特性;利用驻波管法,试验研究了金属橡胶厚度、孔隙率、金属丝直径及背后空气层对其吸声降噪性能的影响,获得了各主要参数之间的相互关系曲线。
5) impedance tube
驻波管
1.
After being analyzed with FEM, impedance tube method was introduced to measure sound transmission loss(STL) of glass.
在有限元分析基础上,采用了驻波管法对小样品玻璃进行隔声量测量。
2.
The principle of 4-channel impedance tube with single-sensor for testing transmission loss(TL) of acoustic materials is introduced,the math-formulas for calculating is also introduced.
介绍了用四通道单传声器驻波管法测试材料隔声量的原理及其所使用的数学计算公式,研究了不同吸声末端对实验结果的影响,并确定了本研究所采用的吸声末端。
6) standing wave tube experiment
驻波管试验
1.
It adds four kinds of modifier into asphalt to modify the nature of asphalt,gets the optimal asphalt-concrete ratio through run-off experiment,and then makes out several groups of different gradation test piece to do Marshall experiment and standing wave tube experiment.
对多孔沥青路面的原材料性能进行了试验,确定了目标孔隙率及最大粒径,向沥青中加入4种不同改性剂对沥青进行改性,通过析漏试验确定最佳油石比,制成多组不同级配试件进行了马歇尔试验和驻波管试验,试验结果表明SBS改性沥青粘度、软化点等均符合要求,满足路用性能指标,优于其他三种改性剂。
补充资料：营驻
1.止行暂住。
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参考词条