wave period

The former has long wave period and strong amplitude.

前者的波动周期较长，振幅较大，直接与日食期间太阳辐射的起伏有关；

The second is the standing oscillation of wave number 2 with a period of 40 day, their antinode and node locations in middle latitude are opposite with those in high latitude.

周期40天的2波驻波振动强度次之，它在中纬和高纬波腹位置相反配置。

Under the third wave period of stimulant abuse peaking in 1997, the government of Japan set up the "Five-Year Drug Abuse Prevention Strategy" in 1998, and developed measures against drug abuse.

1997年日本迎来了药物滥用的最高峰，称为第三次滥用高峰期。

Some types of probability distributions previously used for estimating wave height in return period are reviewed in this aper.

本文对以前使用的推算重现期波高的几种概率分布进行了评述。

To reduce the switching losses of IGBTs in PWM rectifier, a third order square wave is added to the phase voltage control signal on the basis of the Improved Period Average Model. This new control algorithm leads to no switching in about 1/ 3 cycle.

为降低PWM整流器的开关频率，本文在整流器的改进周期平均模型基础上，在相电压控制信号中叠加三次方波信号，使得整流器中的开关管有1／3时间不动作。

Over the same period , London surfed the next big breaking wave of products.

与此同时, 金融城迎来了新一轮的产品创新.

Wave motion of what period mood is big?

什么时期情绪波动大?

A new method of return period wave height calculation

推算波浪多年一遇波高的新方法

Information language development to a wave period to collate information language norms have not.

新闻语言的发展到了一个盘整期,对新闻语言进行整理规范已刻不容缓.

It is showed that a shock wave speed distribution in red light period at a plane intersection satisfies a normal assumption, as well as Poisson assumption.

依据实际测量数据，论证了平面交叉口绿灯转红灯时车流堵塞波的推进速度满足正态分布假设，其拟合优度高于泊松分布假设。

The stock of the Bank of China is very good still, bank there won't be too big wave motion inside a paragraph of period!

中国银行的股票还是很好的，银行股在一段时期内都不会有太大的波动！

The results of experiment three which are accomplished in a closed wave basin show that sub-harmonic surge occures on point pressures and its corresponding period is respectively 2.6s 、 3.0s and 3.4s.

实验（三）在封闭的水池中进行，实验结果中点压力出现了次谐振荡现象，振荡周期分别是2.6s，3.0s，3.4s，对压力的影响随测点的位置而异。