频率

The model types include frequency histogram,cumulative frequency distributing graph and theoretical model with double logarithmic coordinates.

模型类型包括频率直方图、累积频率分布图以及用双对数坐标表示的理论分布模型。

By use of the 1961-2005 daily mean temperature station data over China and the cumulative frequency distribution, the extremely high temperature thresholds on four different time scales, day, pentad, month and season, are defined by the 90th (10th) percentiles of the CFD.

利用1961-2005年45a中国日平均温度的站点资料和累积频率的统计方法，确定了以90%(10%)累积频率为标准的日、旬、月和季四种不同时间尺度的极端高温事件的阈值。

Then, the high and low tidal levels for engineering design were calculated based on the predicted results, and the tidal level corresponding to the cumulative frequency 99% of hourly-varied data series of tidal levels accorded with that corresponding to the cumulative frequency 90% of the data of low tidal level.

利用预报结果计算了工程设计高、低潮位，时序潮位累积频率99%对应的潮位与低潮位序列数据累积频率90%对应的潮位一致。

Based on the Reserve Database of Mineral Resources in China (1997), this paper established the geological model, grade model, tonnage model and grade-tonnage model of 394 placer gold deposit s in China, which involve frequency histograms and cumulative frequency distributing graphs.

依据"1997年全国矿产储量数据库"资料，对全国 394个砂金矿床建立了地质模型、品位模型、吨位模型、吨位—品位联合模型，模型类型包括频率直方图、累积频率分布图；分别总结了砂金矿床品位及吨位分布的典型数学地质特征。

When signals under test are 单击此处编辑母版标题样式 weak, in order to realize signals transmission especially for long distance, direct current amplification or modulation and demodulation may be adopted.

传感器输出的电信号一般为较低频率分量(在直流至几十千赫兹之间)，当被测信号比较弱时，为了实现信号的传输尤其是远距离传输，的电信号一般为较低频率分量(在直流至几十千赫兹之间)，当被测信号比较弱时，为了实现信号的传输尤其是远距离传输，可，当被测信号比较弱时以采用直流放大或调制与解调。

Optimal methods are also presented on system control methodology (current control and pulse frequency modulation) and frequency compensation.

根据研究结果提出系统在控制方法选择（电流控制和脉冲频率调制）和频率补偿方面的优化办法。

This research uses several groups of different cutoff frequencies of low-pass filters for testing to choose the best frequency.

本研究采用几组不同截止频率的低通滤波器进行测试，以选择最佳频率。

Based on the analytic method of cyclic spectrum density, the paper pointed out that the impact frequency could be extracted effectively with the help of scanning cyclic frequency domain.

通过对循环谱密度分析方法的特性分析，指出应用循环谱密度分析方法可以在循环频率域有效提取出滚动轴承的冲击故障频率。

The methods of the first-and second-order cyclic statistics-based hybrid and the first-and third-order cyclic statistics-based hybrid have been proposed. Using the first order cyclic statistics, the frequencies of harmonics corresponding to nonzero mean multiplicative noise were obtained. Then the mean of multiplicative noise can be estimated. With this, harmonics can be retrieved by second or third order cyclic statistics.

提出了基于一阶、二阶循环统计量的混合方法和基于一阶、三阶循环统计量的混合方法，即先利用一阶循环统计量得到对应非零均值乘性噪声的谐波频率，再求出与谐波频率对应的乘性噪声均值，去均值后用二阶或三阶循环统计量来恢复谐波。

This paper introduces a new way to realize a kind of practical cymometer.

介绍了一种实用型频率计的实现方法，主要包括该频率计的硬件组成和工作原理2部分内容。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。