anti-creep device是什么意思

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This paper focuses on analysis of the causation,the mechanism and the hazard of a frequency shift.

对卫星在振动试验中经常发生频率漂移现象产生的原因、机理和危害进行了分析,认为卫星结构的非线性或损伤扩展是频率漂移现象产生的主要原因,并针对卫星结构中常用的蜂窝夹层板进行了非线性动力学参数试验,验证了本文可恢复频漂现象机理分析的正确性。

Oven controlled crystal oscillators are used widely in PD radars for high stability,but there are frequency shift during the warm-up time which is about 5 to 10 minutes.

文中根据已知的OCXO在温升过程中频率慢漂变化的数据拟合出频率漂移函数,分析了该时间段内频率漂移对PD雷达中相参积累的损失和对测速精度的影响。

A simple expression is obtained for pressure induced frequency shifts in the resonator,which is examined for design optimization.

以电弹性体中叠加于偏场之上的小增量场理论为基础,研究了固定在圆柱壳中的圆盘状晶体谐振器的厚度剪切振动问题,得到了环境压力所诱导的谐振器频率漂移的表达式,该表达式可用于指导压力传感器的优化设计。

In order to study the temperature rising and the frequency shifting problems during the operation of the ultrasonic motor(USM),the frequency-temperature characteristics of the USM were analyzed.

为了研究超声波电机运行过程中温升和频率漂移等关键技术问题,采用自然对流传热问题的牛顿冷却定律和热容理论,建立了超声波电机的温度特性与驱动频率之间的关系表达式,仿真分析了驱动频率对电机温升的影响;考虑电机压电定子的转动惯量和剪切变形等因素,利用能量等效原则和铁摩辛柯梁振动理论建立了超声波电机谐振频率与温度之间的关系表达式,通过仿真研究了温度对电机谐振频率漂移的影响,并通过实验验证了仿真结果的正确性。

Frequency drifts due to: DC voltage, temperature, VSWR.

频率漂移跟直流电压、度、波比有关。

Frequency shift of laser pulse propagating in wakefield

尾波场中传播的激光脉冲的频率漂移

Meanwhile, the frequency fluctuation cna be reduced by 39.6%.

同时,频率漂移量减少了39.6％.

Methods of Frequency Stability Analysis and the Influence of the Frequency Drift

原子钟频率稳定度分析方法及频率漂移影响分析

Natural Frequency Decrease Analysis of Aluminum Honeycomb Sandwich Board Based on Lyapunov Exponent

基于Lyapunov指数的铝蜂窝板频率漂移机理分析

The limited sensitivity of present pulsar surveys and the greater frequency drift make the more distant pulsars difficult to observe.

目前脉冲星普查的有限探测灵敏度和大的频率漂移，使我们难以观测到更遥远的脉冲星。

drift cancelled frequency synthesizer

漂移抵消式频率合成器

and add such factors which causes the populationgene frequency to change as “genetic drift、the migration and the sexual selection”;

增加引起种群基因频率发生变化的其它因素,即“遗传漂变、迁移和性选择”;

Structure Design to Reduce Frequency Drift

减小整星基频漂移的主承力结构设计

Reduction of low frequency concepts in the concept drift based on the frequency

基于频度的概念漂移中低频概念的消减

frequency deviator

频率偏移器, 频率致偏装置

prestack F-K migration method

叠前频率-波数域偏移法

Calculus of Power Spectrum of Impulse Signal with Random Drift

具有随机漂移脉冲信号的功率谱计算

The natural frequency of horizontal drift of moored systems is far lower than that of the first order motion.

系泊船舶的水平慢漂运动的自然频率远低于一阶运动的自然频率。

A Test Device of the Drift Mobility for Non-Crystal Photoconductive Materials

非晶光电导材料漂移迁移率的测试装置

A Digital Filter Algorithm for Filtering Baseline Wander and Power-line Interference;

一种滤除基线漂移和工频干扰的数字滤波算法

The Applicantion of Mean Shift Object Tracking Algorithm in Video Sequences

均值漂移算法在视频目标跟踪中的应用

Simulation of Genetic Drift in Closed Population under Different Initial Gene Frequencies

不同初始基因频率下闭锁群体遗传漂变的模拟