采集

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。

The differential pressure signal of slug flow was gathered in a downward inclined pipe, and the time series of liquid slug length was obtained by utilizing the cross correlation analysis.

通过采集下倾管中活塞流的差压信号，应用互相关法分析得到液塞长度时间序列。

Using symmetrical component method, the correlation analysis on calculated results of cross correlation coefficient of on-site collected noise is performed and the conclusion is obtained: the interphase noise of three-phase power transmission line is relevant a certain extent.

首先介绍了中压电力线信道噪声通用模型，对现场采集的噪声进行互相关系数计算，并采用对称分量法进行相关性分析，得出三相电力系统相间噪声具有一定相关性的结论。

The system has realized signal generator, signal"s sampling and averaging function, signal"s power spectral density and cross special density analysis, the design and application of digital filter, signal analysis in time, frequency and inverted frequency domain.

实现了波形发生器的设计、信号采集及平均处理、滤波器的设计及应用、信号的时域、频域以及倒频域分析。

Through contrast and analysis of two sets of designed parameters, the result shows that optimizing method can obtain more satisfying effect in the hand of narrow azimuth seismic survey and equilibrium distribution of inline and crossline coverage.

应用该设计方法对胜利探区4个实际区块的观测系统参数进行了优化设计和对比分析，结果表明，在窄方位角采集，纵横向覆盖次数均匀分布等方面该方法的效果较好。

Depending on getting the crossway transportation data, the intention of the study is to make use of the expert system, neural network and genetic algorithm to analyze the dynamic characteristic of transportation and to form the global optimization control order, and to realize the local signal lamp control by the method of utilization fuzzy control.

研究的目标是在交通数据采集的基础上利用专家系统、神经网络、遗传算法等技术分析交通动态特征、形成全局优化调度指令，并利用模糊控制的方法实现交叉口的信号灯控制。

Eleven crown gall strais of peach trees which comes from the peach orchards of Beijing and Zhengzhou are separated from the axenic medium.

以从北京、郑州桃园采集的桃根癌瘤为材料，在无菌条件下于培养基上分离得到11个根癌土壤杆菌菌株。

This paper introduces hardware and software design of data acquisition system in mine crusher fault diagnosis.

本文以该设备故障诊断为研究对象，介绍了在破碎机故障诊断系统中数据采集子系统的软硬件设计方案，对破碎机故障诊断系统的开发有一定的作用。

A total of 13 macrozoobenthos species were identified, belonging to Crustacea (2 species), Mollusca (3 species), Polychaeta (3 species), and others (5 species).

结果表明：在横沙岛、长兴岛共采集到大型底栖动物13种，分属4个主要类群，其中甲壳动物2种，软体动物3种，环节动物3种，其他动物5种。

In April 2002, 33 species of planktonic crustacea in 26 genera (11 Copepoda and 22 Cladocera) were sampled from 17 sites in the middle and lower reaches of the Hanjiang River, the largest tributary in the middle reaches of the Yangtze River.

2002年4月，在汉江中下游从丹江口坝上至其河口沿途设17个采样点，共采集到浮游甲壳动物10科26属33种，其中桡足类4科10属11种，枝角类6科16属22种。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。