查询词典 persistent wave

To a general KdV equation with singular curves on phase plane, we explain the reason why these non-smooth traveling wave solutions arise.Based on the bifurcation analysis, all possible traveling wave solutions have been known qualitatively.

论文的第三章考虑奇异性对非线性波动方程解的结构的影响，针对相空间上出现奇异线的广义KdV方程，详细讨论了奇异线的存在对解的结构的影响，分析系统中非光滑行波解产生的原因。

And the envelope solitary wave solutions and envelope sinusoidal wave solutions have been obtained.

得到了该方程的包络孤立波解和包络正弦波解。

The envelope solitary wave solutions and envelope sinusoidal wave solutions of DNLS equation are obtained.

得到了DNLS方程的包络孤立波解和包络正弦波解。

In order to avoid the analysis difficulties of DBD circuit in time domain method, a new fundamental wave analysis method of DBD circuit is presented since the current of inverter is closed to sinusoidal wave.

3为降低时域分析方法的复杂和烦琐，本文利用串联谐振电路工作时电流接近正弦波这一特性，提出了串联负载谐振式DBD电路的基波分析方法，推导了DBD电源中主要电气量的表达式。

The different running speeds of the robot excited by sinusoidal wave and square wave were compared experimentally with each other, with the impact of the driving signal amplitude/frequency on the running speed verified.

在实验过程中，分别比较了在正弦波激励和方波激励下机器鱼的游动速度的差异，同时验证了驱动信号的幅值与频率对机器鱼游动速度的影响。

A First Canadian Army evaluation report on the Skink read In a ground support role, the vehicle was an infantry mop-up weapon, advancing with the second wave of armour to clean out infantry positions bypassed by the first wave.

第一份加拿大陆军队对石龙子的评估报告显示在地面支援任务中，她是一种步兵肃清武器，作为第二波的装甲部队前进以清除第一波步兵绕过的区域。

These categories are sky wave and surface wave radar systems.

这两种类型分别为天波雷达系统和地波雷达系统。

According to the characteristics and basic tasks of sky wave over-the-horizon radar ,based on the method of Analytic Hierarchy Process, the hierarchy structure of the operational effectiveness evaluation index of sky wave over-the-horizon radar is set up.

根据天波超视距雷达的工作特性和作战任务，运用层次分析法，给出了天波超视距雷达作战效能评估指标的层次结构，确定了各效能指标及相对权重的计算方法，得出了天波超视距雷达作战效能评估的数学模型，为该雷达的发展改进及作战使用提供辅助的决策依据。

Polarization filtering technique is widely used in many fields, for example interference suppression of sky wave in HF radar. Based on the actual wave data of both signal and clutter, the cause for generation of error, way of error reduction and improvement of SIR by using polarization filtering technique are discussed.

极化滤波技术在高频雷达抗天波干扰等领域有着广泛的应用，结合实际雷达测得的目标回波和干扰回波矢量数据，对极化滤波误差产生的原因、减小误差的方法以及利用极化滤波方法提高信干比的有效性进行了详细分析。

Distant cloud plating has also been dyed orange wave, that wave in the sky, and rolled forward, as if the blue was the sky to drop down to add a charming beauty of many.

远方的云也被镀染成了桔红色的波浪，那波浪在天空中飘游着，翻卷着，给蓝得仿佛要滴落下来的天空增添了几许迷人的瑰丽。

"The operators will suffer a temporary decrease in the number of consumers and short message services as people may not like having to provide their ID cards for a phone number," Xu Junqi, vice-dean with the Policy-Making Institute of the Telecommunications Research Centre under MII, said yesterday.

信息产业部下属的通信决策研究院副主任徐俊其昨天说：&实行手机实名制后，人们可能不太情愿用身份证注册手机号，所以通信运营商会暂时面临用户减少和短信用户减少的问题。&

I don't believe in make-believe!

我不相信这些虚构的故事。