2、

In consideration of the effect of liquid dynamic pressure on the tubing string vertical vibration, the differential equation and frequency equation for describing the vibration are set up.

考虑液动压力对油管柱纵向振动的影响,建立了油管柱纵向振动微分方程,并给出了这种情况下油管柱纵向振动的频率方程。

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3、

Study on Fault Vibration Frequency Spectrums of the Felt Stretcher Roll in a Modern Wide Paper Machine

宽幅纸机毛毯张紧辊特征故障振动频谱研究

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4、

FINITE ELEMENT CALCULATION AND ANALYSIS OF RIBBED SLAB CRACK FOR BLOWER CASING Application of Frequency Conversion Variable Speed Technology on Roots Blower for Mechanical Shaft Kiln

风机壳体筋板开裂原因分析与有限元计算变频调速技术在机立窑罗茨风机上的应用

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5、

Blocking Effects Reduction in Transform Coding with Compensation in Frequency Domain

一种消除变换编码方块效应的频域补偿技术

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6、

Frequency hop coded signal is a new type pulse compression radar signal.

跳频编码信号是新型的脉压雷达信号类型,如何有效地对其截获和识别具有重要的现实意义。

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7、

Certain Topics on Time-Frequency Coded Diversity Techniques

时频编码分集技术中的几个问题

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8、

A Synchronizing System in 4-time 4-frequency Coded Diversity Receiver

四时四频编码分集接收的同步系统

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9、

A new method of least square is raised in curve fitting of flood frequency calculating and its specific properties are analysed.

提出了在洪水频率计算时适线法中最小二乘方的一种新的求解方法,并对其特性进行分析。

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10、
11、

LMS adaptive filters can suppress high power narrow band interference effectively in frequency domain.

频域的LMS自 适应滤波算法可以有效抑制扩频系统中的强窄带干扰.

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12、

If yes, may we know the frequency that you estimate?

如是, 可以让我们知道频率大约为和 吗 ?

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13、

Traditional grid-connected inverter employs low frequency output isolation transformer . It increases weight and cost.

传统的并网逆变器输出端采用工频变压器,体积重量大,成本高.

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14、

Its downholc discharge apparatus are made up of rectification frequency converter, discharger and cable.

其井下放电设备主要是由整流变频器 、 电仪与电缆所组成.

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15、

The relationship between residual wavefront phase error and frequency response in an adaptive telescope is analyzed.

分析了自适应望远镜系统的波面补偿剩余误差与频率响应的关系.

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16、

But the transition frequency reduction is not obviously during the sequential transfer.

但在连续传输时,它对翻转率降低不明显.

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17、

Model 0111 s had hull-mounted, high frequency, active search sonar with three five-tubes RBU 1200 anti-submarine mortars.

0111S型有一套舰体安装 、 高频 、 主动搜寻StagEar声纳和三具五 - 管RBU1200型反潜迫击炮.

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18、

Industry wide electronic transformers, motors, variable frequency power supply and other winding capacitors used insulating material.

广泛作为电子工业中变压器 、 马达 、 线圈电容器及变频电源供应器等缠绕用之绝缘材料.

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19、

The color code of computer photoelectric automatic track. Speed adjusting of frequency conversion.

100%包装率,无空包,电脑光电色标自动跟踪, 变频调速.

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20、

While hunting on the 3 seabed they emitted a 4 ) weird 5 ) medium frequency noise.

在海底猎食时,们发出一种奇怪的中频率杂音.

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