查询词典 wave down

This wave direction may depend on the ratio of length to width of the structure. Therefore, it is necessary to make wave search to decide the most dangerous wave direction. In addition, the vertical displacement and wave bending moment of transverse section in long zero upcrossing period are larger than that in short zero upcrossing period.

另外，平均跨零周期较大时的垂向位移和横剖面波浪弯矩值大于平均跨零周期较小时的值，这时结构谐振峰值对响应的贡献不大，且垂向位移和横剖面弯矩沿浮体长度方向的分布呈现明显的非对称特性。

The results show that the influences of duration and amplitude of stress wave on spallation process of rock under stress wave loading are important; and stress wave with different waveforms is characteristic of different stress values and different stress loading ratios during the same period of time, which brings about the comprehensive effect when difform stress wave is loaded to medium.

通过对不同应力波延续时间、不同应力波峰值和不同应力波波形下应力波诱发层裂过程的数值分析，对应力波反射诱发层裂的规律和机制进行探讨。

In the incontinuous cutting, the wave shape of milling can be looked as periodic function. When the milling wave shape with single-tooth was looked as impulse function, by the Fourier Transform, we can find out that it is composed of sine wave with a given frequency and a series of integer multiple frequency. Discussing on the power function is a major tache for studying on the cutting capability of the complex three-dimension groove milling inserts, so to know the facts that affect the single-tooth milling spectral value, and to observe the dynamic milling wave property from the composition of the power spectral, thus we can design and optimize grooves.

在断续切削中，铣削波形可被看作周期函数，将单齿铣削波形看成为脉冲函数，经过傅立叶变换，可以表示为一个按特定的基本频率变动的正弦波形的分量和许多个按基本频率的整数倍而变动的正弦波形的分量叠加而成，讨论所获得的频谱函数，是研究三维复杂槽型铣刀片切削性能的主要环节，以便了解影响单齿铣削波形幅值谱图的各种因素，并从功率谱图的组成情况来考察动态铣削波形的特性，从而进行槽型的设计和优选。

The square wave or corrected sine wave auto inverters have many limitations. When supplying to inductive load (such as electric fan, electric drill etc.), a square wave or corrected sine wave auto inverter produces too much harmonic current which makes the load seriously heated and even damaged. When supplying to capacitive load or rectificative load such as notebook PC, mobile phone charger etc.

方波或修正正弦波电源有很多局限性：在为感性负载供电时产生大量谐波电流，导致电器严重发热，甚至损坏；为容性或整流性负载（笔记本电脑、手机充电器等）供电时产生严重的脉冲电流，严重时可能导致电器损坏。

Broke estate wind water, a five favorable because, first, home of the popular wave is advancing wave upon wave, the wave of tidehead Guanwaidichan as one has not been 关内 Nanshan "substitutes" have been contained, rather because work gets big cake, enjoy more Gospel; Second, the department kilometer momentum to continue sweeping, that the current direction is still a certain potential to be tapped village, but village has water reserves for the development of land, and only broke with the village close to successfully enjoy Phuket real estate situation favorable to the extension; Third, broke a vast reserve of land and 11 million square metres of land available for the real estate industry highly competent, and broke the natural environment unique, for the development of high-quality flats for the rich soil; Fourth, Shenzhen, Guangzhou, Zhongshan and Zhejiang, and other well-known developers have about broke, overseas Chinese,"Guangzhou Biguiyuan,""Zhongshan Garden Music" will be successfully settled in that the supply of real estate market is rapidly broke assembly, formed; Fifth, further spread kilometer race, For kilometer property kilometer race with the actual contribution to local economic development, then broke to "miss"!

2000年横岗地产风声水起，得缘于五大利好，其一，全民置业化浪潮一浪高过一浪，关外地产作为这一浪潮中的潮头之一，并未因关内南山&替代品&的出现受到抑制，反倒因为蛋糕越做越大，享受到更多福音；其二，布吉片区发展势头继续势如破竹，显示目前布吉方向仍有一定潜力可挖，但是布吉可供开发土地储备已经告急，而横岗与布吉只是咫尺之遥，使横岗可望享受到布吉地产形势利好的延伸；其三，横岗土地储备丰厚，1100万平方米土地可供地产界游刃有余，同时，横岗自然环境得天独厚，为开发高素质楼盘预备了丰厚的土壤；其四，深圳、广州、中山及浙江等地知名地产商纷纷看好横岗，中国海外、&广州碧桂园&、&中山雅居乐&等即将在横岗落脚，表明横岗地产供应市场正在迅速集结、形成；其五，片区竞赛进一步蔓延，片区竞赛对于片区地产的实际贡献与对于当地经济的发展有目共睹，使横岗不愿再&错失良机&！

However, various methods are used to suppress surface waves from shooting to receiving in the process of seismic survey, thus research should be carried out in the following aspects:① joint inversion with surface wave, refraction first break and microlog data;② offset range and the relation between group interval and surface resolution suitable for use in surface wave analysis;③ the influences of lateral relief of array on propagation of surface waves;④ method for Hi-Fi purification of surface wave signals;⑤ method for extracting dispersive curve through time-frequency analysis;⑥ forward modeling and in-version methods of surface wave in view of three-layer structure.

但石油勘探从激发到接收，都采取各种方式来压制面波，因而需要开展多方面的研究：①结合面波、折射初至波和微测井信息的联合反演；②地震记录中适合面波分析的炮检距范围、道间距与表层分辨率的关系；③排列横向地形起伏变化对面波传播规律的影响；④高保真提纯面波信号的方法；⑤运用时频分析提取频散曲线的方法；⑥针对三层结构的面波正反演方法。

In the open ocean, due to very long wavelengths, the wave height is small (only 1-2m), this wave is not rough, but the spread of to near coastal areas, due to the gradual shallowing water depth, seabed resistance is increased, wave deformation, wave height increases rapidly (up to 10 meters), will be the formation of waves rushed into the land.

在开阔的大洋中，由于波长很长，波高不大（仅1—2m），这种波浪并不汹涌，但传播到接近海岸地带，由于水深逐渐变浅，海底阻力加大，波浪变形，波高急剧增大（可达10余米），便形成巨浪冲向陆地。

Based on the fact that the different modes of Rayleigh wave have different propagation velocities, the signals of Rayleigh wave which superposes in time domain can be separated in frequency-wave-number domain, different modes of Rayleigh wave are separated and extracted by Fourier transform.

摘 要：应用Fourier变换法分离提取地震记录中不同模态的瑞雷面波，其原理是：利用瑞雷面波各模式传播速度的差异，将时间域中叠加在一起的瑞雷面波信号在频率波数域中分开，以此实现分离提取各阶模态瑞雷面波。

Second, based on the spherical vector wave function in uniaxial anisotropic medium, and the first, second, third and fourth spherical Bessel functions satisfy the same differential equation and recursive formula. The scattering fields in terms of spherical vector wave function from a uniaxial anisotropic spherical shell and an anisotropic uniaxial-coated conducting sphere by a plane wave are derived. The electromagnetic fields in uniaxial anisotropic medium and free space can be expressed in terms of spherical vector wave functions in uniaxial anisotropic media and isotropic medium.

二、在建立均匀各向异性单轴介质球矢量波函数理论的基础上，利用二阶线性偏微分方程的性质和第一、第二、第三和第四类球Bessel函数满足相同的微分方程和递推关系，我们分别研究了单轴介质球壳和单轴介质涂覆导体球对平面波的电磁散射特性，首先给出了各个区域的电磁场用球矢量波函数来表示的解析表达式，进而利用电磁场在边界上满足电磁场切向连续的边界条件和球谐函数的正交性，得出了各向异性单轴介质球结构中电磁场用球矢量波函数表示的系数所满足的矩阵方程。

Secondly, the paper has carried on the analysis to the millimeter wave blasting fuse near field target characteristic, and has produced a RCS measuring technique. The analysis is that non- atmosphere window triangle wave modulation millimeter wave blasting fuse slip frequency spectrum, which has completed under the triangle wave modulation slip frequency signal time domain and the frequency range analysis.

随后对毫米波引信近场目标特性进行了分析，并给出了一种RCS的测量方法，并系统分析了非大气窗口三角波调制毫米波引信的差频频谱，完成了三角波调制下的差频信号时域和频域分析。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。