查询词典 cross-rod

The theoretic formulas for cross correlation analysis were derived. 2. According to the frozen model, a transit model and expression formula of flow noise were got. Parameter estimation algorithm was applied in calculating of cross correlation function.

根据凝固模型，建立了流动噪声信号的传递模型，推导出凝固模型时的传递函数的表达式；对两种流动模型情况下，流动噪声的传递进行理论和仿真研究，仿真表明，尽管参数估计法可以消除传感器的涂污现象，但计算量大，速度慢，不能满足实时测量的要求。

Ultrasonic measurement method is a new one. It has many advantages, such as, not changing the profile of the flow and characters of the fluid, non-invasion, no pressure losing and can work under the severe conditions. Collecting the flow noise signals at the upstream and downstream of the pipe, adopting the cross correlation method to analysis signals, calculating the cross correlation function and finding the peak of it, then we can get the transit time.

超声波流量测量具有不改变流动状态与性质、非接触、耐恶劣环境等优点，通过对所采集的上、下游流动噪声信号进行相关分析，其互相关函数的峰值位置所对应的时间，为流体流过上、下游传感器之间的距离所用时间，进而计算出流速和流量。

In the first session the fans vibration on-line monitoring system is realized with VC language, also compile auto power spectrum density function, cross power spectrum density function, autocorrelation function and cross correlation function etc spectral analysis function to carry through simple offline fault diagnosis.

首先用稳定性强、扩展性好的VC++语言开发了通风机振动在线监测系统，并编写了自功率谱密度函数、互功率谱密度函数、自相关函数和互相关函数等频谱分析函数来进行简单的离线故障诊断。

A theory of cross correlation function s is developed in this paper that the cross correlation function s can be expressed as summations of decaying sinusoids as the impulse response functions under white noise excitation.

对互相关函数理论的进一步发展作了详细推导，探索出一条将互相关函数理论同多种经典模态分析方法相结合进行环境激励下模态分析的方法。

According to this theory, hardware was made; the experiments showed different flow case brought different cross correlation function, when the distance of two sensors within 0.5～1. 5 diameter of the pipe, a sharp peak can be detected in the curve of cross correlation function, the frozen model is satisfied.

开展了互相关函数算法的研究，重点研究了极化相关算法，对该算法进行仿真研究；仿真结果与实验处理结果对比，得出只有将流动噪声信号量化为+1、-1时，极化相关算法可以得到准确的峰值位置。

Auto-focusing algorithm based on cross correlation ;2. By means of signal processing techniques such as the power spectrum function, the auto correlation function and cross correlation function, two kinds of ECG signals when AF does or does not happen were successively analyzed, showing the evident differences between them.

提出了一种简便有效的、由心电图曲线提取QRS -T复合波的新方法，从而获得P波或f波；利用功率谱、自相关、互相关等信号处理技术，对它进行了处理和分析，特别是，比较了未房颤时和发生房颤时的相关信息的显著差别。

Information of system auto and cross spectrum, auto and cross correlation. coherent function, signal to noise ratio, frequency response and impulse response was established to help the study and arrangement of the module components.

由力规及加速规两量测之时域讯号，经快速富利叶转换，计算其自频谱及互频谱，再经反富氏转换回时域之自相关及互相关函数、相通函数、讯噪比、频率响应函数、脉冲响应函数。

The influence of the cross—fire of signals in the LSSDV three—beam measuring model is analysed in detail. According to the characteristics of the model, the idea that arranging optical system and receiving system properly so that the cross—fire of signals can be neglected is presented.

详细分析了LSSDV三光束测量模型中信号串扰影响问题，根据该模型的特点，提出了适当布置光学系统和接收系统的位置，可以忽略信号串扰影响的新见解。

Broken cross rate cross-reference clause A clause in a Bank loan document referring to a loan by a commercial bank.

相互参照条款世界银行贷款文件中参照一项商业银行贷款的条款。

The reaction over potential is lower and the direction of electroosmosis and methanol cross over is opposite,so the rate of methanol cross over is reduced.

与气体燃料相比，甲醇易于储备与运输，能量转化效率高，反应产物主要是水和少量的二氧化碳，是环境友好的绿色能源。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！