Square waves, like sine waves, are periodic.
方波如正弦波一样是周期性的。
Digital systems use signals, which are of pulse form, that is, a series of short-duration square waves.
数字系统使用信号脉冲形成的，也就是说，一系列的短周期平方波。
The shift and mnemonics for 8N-bit binary number can be achieved by the square waves from an oscillator in design.
在设计中利用了振荡源输出方波这一特性，实现了8N位二进制数的寄存及移位。
The transmitted signals which were modulated is a group of orthogonal sine signals as subcarrier and non-regular zero square waves that the code elements period is t as baseband coded formats.
它所发送的信号是由一组正交的正弦信号作为副载波，用码元周期为T的不归零方波作为基带码型调制而成的。
Takes a sparkling hoop; blows on it, waves it, it turns into a square!
拿个闪闪亮的呼拉圈，吹一下，挥一挥，圆圈变四方！
She went to Times Square and Rockefeller Center, where she elicited cheers, waves and shocked stares.
她前往时代广场和洛克菲勒中心，引发阵阵轰动。
A 10, 000 square kilometer (3, 861 sq. mile) island sank beneath the waves long ago, in the frigid waters of the Atlantic north of Scotland.
一座1000平方公里(3861平方英里)的岛屿沉没在苏格兰北大西洋冰冷的海浪之下。
There are many elderly people in the central square dancing, as well as in rhetoric, sometimes issued by waves of happy laughter.
广场中央有许多老年人在跳舞，还有的在高谈阔论，时而发出一阵阵快乐的笑声。
In other words, the rotation of the square rods varies the area of the scattering sections, so that the band structures and the propagation directions of acoustic waves can be controlled.
即利用旋转四方柱子，改变波散射截面的大小，从而实现能带和波传播方向的调节。
The generator can output three kinds of waves : sine wave , square wave , triangle wave.
该函数信号发生器可输出三角波，方波和正弦波。
This paper employed shallow water equations with moving pressure to calculate water waves generated by a square-stem ship in shallow water.
本文从含移动压力的浅水波方程出发，计算方尾船在浅水中的兴波。
Wireless telephone that permits telecommunication within a defined area that may include hundreds of square miles, using radio waves in the 800-900 megahertz (MHz) band.
允许在数百上千公里的确定区域内通信的无线电话，使用800 ~ 900兆赫(MHz)频带的无线电波。
Sound waves travel outward like balloons expanding around their source. The sound's power is distributed on the surface of the wave which increases with the square of the distance from its source.
声波的扩散就好比气球的膨胀，声波从声源向四周扩散，声音的能量也随着声波四散开来。
Sound waves travel outward like balloons expanding around their source. The sound's power is distributed on the surface of the wave which increases with the square of the distance from its source.
声波的扩散就好比气球的膨胀，声波从声源向四周扩散，声音的能量也随着声波四散开来。
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