波形的

Transmission is said to be distortionless if the input and the output have identical wave shapes within a multiplicative constant.

如果输入与输出有完全相同的波形在增加的常数范围内则传送被当作是失真。

Electrodynamic shakers are used in most cases because they can operate over a broad frequency range with accurately controlled waveform.

极大多数的情况下应用电动振动台，因为它能在一定广的频率范围内工作并且能准确地控制波形。

The circuit system introduced in this paper has generated the expectative drive waveform successfully and drives the target PDP displaying.

基于本文综合技术设计制作，采用课题组开发的PDP行列驱动芯片的驱动电路系统，成功实现PDP驱动波形产生和系统点屏测试。

In this paper, waveform-computing arithmetic is used to measure power factor, and a module to measure power factor is designed according to the definition of apparent power of IEEE standard 1459-2000, and the module is used successfully to measure power factor of three-phase power supply.

文中利用波形计算法，根据IEEE 1459-2000视在功率定义设计了功率因数测量模块，并成功的应用于三相电源的功率因数测量。

With fast Fourier transformation, the waveforms of P-t curve were analyzed, and corresponding dynamic three-dimensional spectra were obtained.

用快速富立叶变换方法分析了P-t曲线的波形，得到了次声的三维动态谱。

It is helpful to students to study the composition of hardware and the design of software, to learn automotive fault waveform generator testing and trouble shooting. Thus it can be used to enhance their actual operating techniques and improve the efficiency and effect of teaching and studying.

它能使学生直观地认识和了解其硬件组成和软件设计，学习汽车发电机波形检测和故障排除的基本方法，有利于提高他们的实际操作技能，提高教学效率和教学效果。

For more complex waveforms, an external capacitor at the filter pin can be used for supplementary signal demodulation.

针对更复杂的波形，在滤波器引脚加上一个外部电容器便可用于辅助信号的解调。

A kind of low flyback power converter employing synchronous rectification technique is designed and a typical example is introduced.

介绍了一种小功率反激同步整流电源的设计，并通过样机验证了方案设计的可行性和实用性，并给出了电路原理图、测试波形和数据。

The paper also analyses other single phase bridge half controlled rectifier with equivalent freewheel diode and draws work wave of each part, this can help to understand fundamental of this kind of rectifier.

对于另一种自带等效续流二极管的单相半控桥，文中给出了各部分工作波形，可进一步加深对单相半控桥的理解。

The equipment can provide comprehensive and accurate recording data for quality study of electric energy. Besides, it displays real time curve and frequency spectrum.

本装置能对电能质量的各项指标提供全面、准确的测量记录数据，并实时显示波形与频谱。

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％。