波

My own use VHDL to achieve series dds, able sine, square, triangle wave.

我自己用vhdl实现编的dds，能实现正弦波，方波，三角波。

Various signals are an important part of correspondent area. In this area, sine wave, triangle wave and square wave are common signals.

各种各样的信号是通信领域的重要组成部分，其中正弦波、三角波和方波等是较为常见的信号。

In addition, the nonlinear processes such as cross-phase modulation, non-degenerate two-photon absorption, and stimulated Raman scattering must also be considered for double wavelengths propagating in waveguide.

在归纳分析了SOI对光信号处理的研究进展的基础上，进一步完善了超快脉冲在脊形硅波导中演变时所满足的线性和非线性传输方程，在此非线性方程中包括波导线性损耗、群速度色散和三阶色散等线性效应；同时也包含了自相位调制、简并双光子吸收、自由载流子吸收和自由载流子色散等非线性过程；当双光场在波导中传输时，脉冲之间的交叉相位调制、非简并双光子吸收和受激拉曼散射效应等非线性效应也被考虑。

Currentyly we provide more than 60 different texture, such as straight wave, weave wave, water wave, diamond wave, etc., and more than 50 different color styles, such as pure color board, colorful board, blinking board, illuminatig board, crackled-looking board, archaized board and gold foil board, etc., coulld be used as replacement of marble, natural bark, and all these products are enviroment-friendly, moisture-proof, mildew proof,, fade resistant, distortion resistant.

currentyly我们所提供的60多个不同的纹理，如直波，编织波，水波，钻石波等， 50多个不同的颜色样式，例如纯彩色局，丰富多彩的董事会，闪烁局， illuminatig局， crackled前瞻性的董事会，董事会和仿古金箔局等， coulld被用来作为更换大理石，天然树皮，而所有的这些产品是环保友好，防潮，防霉的证据，，耐褪色，失真耐药性。

Based on experimental results for conventional ultrasonic creeping wave,straight beam probe,small angle longitudinal wave,micro-paralleling creeping wave,an approach is proposed to select small angle longitudinal wave and micro-paralleling creeping wave to detect strut porcelain insulator.The choice of ultrasonic apparatus,probe and test block,the adjustment manner of working sensitivity and sweep speed,the principle of decision defect are presented.

在总结分析传统超声爬波法、横波法、普通直探头法、小角度纵波斜探头法和微型并联爬波法等几种常用的支柱瓷绝缘子超声波检测方法优缺点的基础上，通过试验分析了采用小角度纵波斜探头结合微型并联爬波探头对支柱瓷绝缘子进行超声波检测的工艺方法，确定了用该法对瓷绝缘子进行超声波检测的仪器、探头和试块的选用，探伤灵敏度和扫描速度的调整方法以及缺陷判定的原则。

Through the analysis on spurious signal, we concluded that the sources of spurious signal generation are due to fabrication defects in the strip—coupling region and the defects in the diode array, so the advanced surface technique is the guarantee to spurious signal suppression.

通过对杂波的分析，我们得出结论：杂波主要是由相互作用区的缺陷以及二极管阵列的缺陷所产生，因此，杂波的抑制要靠良好的工艺来保障。

Three conclusions are then made as follows:(1) The surface current density nearby the subsolar point,which is relatively easier to be observed,may be used to largely describe the behavior of the bow shock instead of the total bow shock current.

由此我们得到如下结论：(1)相对容易观测的日下点附近的舷激波面电流密度，可以替代舷激波总电流大致反映舷激波的电流特性。

Three typical terrains are simulated using wave superpose method based on the work of full exploration of terrain model and its realization Effect of wavelet number on simulation result is studied, the results indicate that satisfactory results can be obtained by selection of a certain wavelet number.

在充分探讨了地形模型和随机过程实现的基础上，采用波叠加法仿真了3种典型地形。研究了子波数对仿真结果的影响，说明选取一定数目的子波即可得到满意的结果。

After an arbitrary time, the new position of the wave front will be that of a surface tangent to these secondary wave lets.

介质中波动传播到的各点都可以看作发射子波的波源，而在其后的任意时刻，这些子波的包络就是新的波前，这就是惠更斯原理。

This technique made full use of the functions of DMA Chaining and hardware interrupts of DSP,realized the synchronousness successfully between receiving and processing of the data,Then it restored the CW signal successfully by structuring a cancelling- chopper -sequence.

该技术充分利用了DSP提供的链式DMA和硬件中断等基本技术，成功地实现了数据接收与处理的同步，进而通过构造去斩波序列成功将连续波信号还原，经过量程判断之后，准确地计算出连续波信号采样数据的平均值。

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％。