查询词典 periodic

This can be consider as the problem of periodic boundary.

它可以看成是带周期边值条件的解。

However, it is a very difficult work to detect these periodic orbits due to their unstable properties.

然而，由于这些周期轨道本身具有的不稳定性，对它们的探测成为一件较困难的工作。

And it should be noted that the periodic oscillations are disappear at high magnetic field.

然而值得注意的是在高磁场的情况下，并无周期振荡的情形。

We proposed a quantitative detection method for weak periodic signal in this paper.

提出了一种对微弱周期信号的定量检测方法。

Our periodic face-to-face meetings are the best way to accomplish this.

我们定期面对面的会晤是实现这一目标的最佳途径。

It was composed by permittivity with periodic structure in one、two or three dimension.

光子晶体是一种新型的光学材料，它是将不同介电常数的介质材料在一维、二维或三维空间内组成具有光波长量级的周期性结构。

The accounting recording procedures are different under the periodic inventory system and the perpetual inventory system.

定期盘存制和永续盘存制的会计入账程序是不同的。

Of course, the meteor was part of the annual rain of dust from periodic Comet Swift-Tuttle known as the Perseid Meteor Shower.

斯威夫特－塔特尔彗星周期性回归后，遗留下的尘埃形成一年一度的流星雨，也就是著名的英仙座流星雨，当然，这颗流星就是其中的一部分。

Perseid meteor shower is an annual fixed July 17 to August 24 during that time, it is not only quantity, but almost never in the absence of the Star in the summer before, is the most suitable non-professional meteor observers of the meteor shower, status column throughout the year the first three periodic meteor showers.

英仙座流星雨每年固定在7月17日到8月24日这段时间出现，它不但数量多，而且几乎从来没有在夏季星空中缺席过，是最适合非专业流星观测者的流星雨，地位列全年三大周期性流星雨之首。

By using perturbation theory, the asymptotic expressions of periodic solutions are obtained and compared with the numerical results.

研究了一类慢变参数振子系统，通过摄动方法得到其对称周期解的渐近展开式，并与数值解进行了比较。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。