查询词典 high frequency

High frequency modulation and phasic demodulation technologies are also used to improve the resolution in dynamic measurement.

采用对光强进行高频调制和相位解调的方式提高了系统的动态测量精度和稳定性。

In the course of Art and Design, Photoshop is a high frequency of use of software.

在艺术设计过程中，Photoshop是使用频率很高的软件之一。

Famines in Shaanxi history is characteristic of frequentness, graveness, regionality and upgradation, assuming a recurrent period of proximately 3, 7, 15, and 22 years. Hence an obvious period icity of 4 phases of high frequency.

陕西历史饥荒的发生频率具有频繁性、严重性、局部性、增长性；有着准 3年、7年、15年、2 2年发生周期，具有明显的阶段性，大约每 10 0年有 4个高发阶段。

The article makes a comparison among different types of bus, bus transmission signal and several familiar topologies of front-end converters and load-end converters. Finally, the half bridge converter with full-wave rectifier based on the high-frequency parallel-type AC bus bar is chosen as circuit structure and optimized. The working mode under different condition of the circuit is analyzed and a mathematical model is set up under continuous current mode. Simulation result is used as comparison.

通过对比不同类型的母线、母线传输信号以及各种常见的前端变换器拓扑和负载变换器拓扑，确定了基于并联型高频交流母线的半桥变换器加全波整流作为电路拓扑，并优化了电路的结构，分析了基于不同工作状态下的电路结构并建立电流连续模式的数学模型，并与软件仿真结果进行对比。

The radiation takes the form of high-frequency gamma rays .

这种辐射是以高频伽马射线的形式出现的。

The subsection integral is used to get a simple function at first in the numerical calculation, and boundary integral is realized by gauss integral on each panel and line, then the complexity and isstability as a result of the high frequency surge function can be avoided.

数值计算中，首先采用分部积分对被积函数进行简化处理，然后采用高斯积分实现面元和线元上的积分，避免了被积函数为高频振荡函数所带来的数值计算的复杂性和不确定性。

And the effects of the geometrical dimensions of the grating on high frequency characteristics of system were analyzed.

并针对矩形栅的两种典型结构进行数值计算，分析了金属栅的几何尺寸对系统高频特性的影响。

No, wait--I'm picking up some sort of high frequency broadcast with waves generated from forty to sixty gigahertz.

"不，等候--我正在以从四十到六十个十万万赫被产生的波浪拾起高频率广播的一些类型"。

The GKS stability theorem for one-dimensional model of hyperbolic initial and boundary value problem, Trefethen's explanation and extension based on the concept of group velocity are generalized firstly. Another possible high-frequency instability mechanism in numerical realization of MTF is pointed out based on his explanation and extension, namely, coupling effect of outgoing harmonic wave along one direction and node motion in the other directions can reverse the energy propagation in multi-dimensional discrete grids.

本文概述了—维双曲型偏微分方程组初边值问题数值稳定性的GKS定理及Trefethen基于群速度概念对这一定理的解释和推广；并应用Trefethen的解释和推广指出了MTF在数值实现中可能出现的另一种高频失稳机制，即在多维离散网格中，沿某一空间方向的外行简谐波，由于与其他空间方向节点运动的耦合效应可以使能量传播方向反向。

Objective To evaluate the role of high frequency ultrasound in the diagnosis of nodular goiter.

目的 探讨高频超声在结节性甲状腺肿诊断中的应用价值。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失