1) sound field separation
声场分离
1.
The principle of statistically optimal planar near-field acoustical holography and the sound field separation technique;
统计最优平面近场声全息原理与声场分离技术
2.
The formula of the sound field separation technique based on measurement of the three-dimensional acoustic intensity with single holographic plane was established according to the superposition theory of particle velocity and the Euler equation in wave number domain, and the acoustic pressure caused by the sound sources on one side of holo.
在测量全息面三维声强和均方声压的基础上,根据平面上二维切向有功声强与复声压相位间的关系来间接获取复声压的相位,结合测得的均方声压,得到全息复声压;根据全息面上微粒法向振速的叠加原理和波数域的 Euler公式,推导出基于单全息面三维声强测量的声场分离公式,将全息面两侧声源各自在全息面上产生的声压分离开来。
3.
The sound field separation technique based on single surface measurement is investigated in this paper.
在近场声全息技术的基础上,研究了基于声压-质点振速测量的单面声场分离技术。
2) sound field distribution
声场分布
1.
The calculating model of sound field distribution along the urban elevated railway.;
城市高架轨道交通沿线声场分布计算模型
2.
According to the theory of wave acoustics and ray acoustics,train is regarded as a moving limited line sound source and the mathematics model of sound field distribution is set up around the elevated railway.
根据波动声学和几何声学原理,将列车看作一运动着的有限长线声源,建立了有声屏障时城市高架轨道交通沿线声场分布计算模型。
3.
Through monitoring with sound arrester and without sound arrester, analyses the sound field distribution on the side of high way, discover the sound field distribution character for the purpose of advising the scientific methods of sound degrading design and checking.
通过对高速公路侧向有、无声屏障状态下的声场分布测试与分析 ,旨在揭示高速公路声屏障降噪声场的分布特性 ,为道路声屏障的声学设计及验收方法提供科学依
5) sound field decomposition
声场分解
1.
Unitary MUSIC algorithm based on sound field decomposition for UCA;
声场分解的均匀圆阵实值MUSIC算法
2.
Based on the principles of sound field decomposition,the influence of rigid cylindrical baffle on the UCA response is analyzed.
在声场分解理论的基础上,分析了刚性圆柱体对圆阵响应的影响,研究了均匀圆阵对连续圆阵采样所产生的冗余误差及其与阵元数和圆阵半径的定量关系,由声场分解得到的特征波束构成一虚拟线阵,此虚拟线阵具有360°的方位角观察范围,在此基础上利用MUSIC算法实现了声源波达方向估计,在单声源条件下推导了算法的Cramer-Rao界的定量表达式,并进行了计算机仿真验证。
6) noise separation
噪声分离
1.
The exploration of the conducted EMI noise separation including hardware-based separation and software-based separation have been described and compared, with advantages and disadvantages discussed.
结果表明 ,基于分相器 /混和器的噪声分离网络具有更好的高频特性 ,且网络插损和噪声模态抑制特性能够满足工程精度要求 ,但网络制造成本较高 。
2.
In this paper, noise separation and frequency spectrum analyzing techniques are used to find out why the noise level of the bus of GZ6921 model with rear_placed diesel engine layout exceeds the limit set by the national standard, the main noise sources and their frequency spectrum distribution are thus identified.
运用噪声分离、频谱分析等技术手段 ,找出了GZ6 92 1型后置柴油机大客车噪声超过国家标准的原因 ,并对主要噪声源及其频谱分布进行了分析 。
补充资料：分离式分离机
分子式：
分子量：
CAS号：
性质：又称分离机。根据操作原理分类的一类离心机。用以分离更小固体颗粒（小于5微米）的不同浓度的场合和分离乳浊液和细粒子悬浮液。常用的有管式高速离心机、室式分离机、碟式分离机等。
分子量：
CAS号：
性质：又称分离机。根据操作原理分类的一类离心机。用以分离更小固体颗粒（小于5微米）的不同浓度的场合和分离乳浊液和细粒子悬浮液。常用的有管式高速离心机、室式分离机、碟式分离机等。
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