波形的

The historic display mode for seismic records graphs amplitude as a function of time for each geophone group output, giving wiggle trace or squiggle or conventional display.

以前的地震记录图形显示方式是把每一组检波器的输出振幅作为时间的函数，给出波形道或波形曲线或常规显示。

Furthermore,using the stroboscope lamp the author hasobserved some serious distortion in waveform of the soliton for large Lyapnov exponents.

进一步，作者用频闪灯现察并拍摄下了强、弱混沌(对应于大、小L-指数值)时的空间孤立子波的波形，发现强混沌时，伴有严重的空间波形畸变。

As a result of the frequency conversion electrical machinery particularity, uses the junction to hand over the frequency changer power supply the electrical power system, caused the electric current and the voltage waveform has the distortion, the profile turned the nonsine wave by the original sine wave.

由于变频电机的特殊性，采用交交变频器供电的电源系统，使得电流和电压波形发生了畸变，波形由原来的正弦波变成非正弦波。

In this paper, with domain analysis method for reactive power in nonsinusoidal, the formulas of apparent power and power factor both in nonsinusoidal and asymmetric conditions are describled.

本文从单相非正弦波形下无功功率的时域分析定义出发，导出三相不对称时视在功率的公式，从而获得非正弦波形又不对称下三相功率因数的计算公式。

In this algorithm, part of the frame is selected as reference region to extract wave information. Based on wave comparability, a stepwise refinement strategy is adopted to calculate the parameters in three sequential stages. Experiments show that the proposed algorithm can rapidly obtain correct mosaicking image with low computational cost.

该算法从每个图像帧的参考区域提取波形信息，通过计算波形相似度并引入逐步求精的拼接策略，分3个阶段获得拼接参数，确定图像帧之间的重叠和水平移位。

The paper presents the blasting of the surrounding rock of an underground project,and the acoustic measurement is carried out to research the cumulative damage effect of rock mass which is caused by blasting many a time.

文章基于在某地下工程围岩中多次爆破作用下岩体累积损伤效应的声波测试，对声波测试信号中的波形、振幅及波形相关性等信息随爆破次数增加的变化规律进行了分析。

Chapter 1 introduces the waveform analyzers applications in modern electronic measurement and its development in the world. The main research topics are also introduced in this chapter.

第一章概述了波形分析仪在现代测试中的应用和国内外波形分析仪的发展，并说明了本文所涉及的研究工作范围。

Referring to the principle of narrow-band communication, two kinds of algorithm to optimize the template waveform are introduced in this paper. One is the long-tail template waveform, which is based on multi-location of receivers and one-time correlation.

在参照窄带通信的最佳接收原理的基础上，本文提出了两种接收信号模板优化的算法，一是采用长尾模板波形，二是短尾模板波形。

Though in the impact process exists rebound phenomenon and the wave form becomes interrupting impulses, yett the energy loss of the mass is very low. So it is thought to link the interrupting impulses to a continuous wave form by using proper way and then to process the data by mature vibration analyzis technique.

该方法认为，尽管冲击过程中存在着&回弹&，波形成为断续的脉冲，但质量块在空中运动中能量损失很小，可以用适当的方法把它们组合成连续波形，以致我们可以用成熟的振动分析技术进行数据处理。

The mathematical model of a dual three-level STATCOM which consists of two three-level inverters connected together through the inter phase transformer is presented by means of the switching function concept The dc-link voltage, output current, and output voltage waveforms of the STATCOM are analyzed.

利用开关函数的概念，建立了由2个三电平逆变器和1个输出耦合变压器构成的双三电平STATCOM的数学模型，并对其直流电压波形和交流侧输出电压和电流波形进行了仿真分析。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。