查询词典 wave

Based on the characteristic equation of THz electromagnetic wave in metallic hollow waveguide, the dependence of the transformation attenuation and phase constant on the frequency of THz wave, inner radius of the waveguide and conductance of the metal material using Newton-Raphson iterative method.

从其传输的特性方程出发，利用Newton-Raphson迭代方法数值模拟了传输损耗和相位常数随太赫兹波频率、波导内径以及波导中金属镀层的电导率变化关系。

New data types (converted-wave data, 4D data, azimuthal AVO analysis,shear-wave data).

新的数据类型（转换波数据，四维数据，方位AVO分析，横波数据

The influence of background radiation on noise of medium-wave and extremely-long-wave HgCdTe detectors is studied.

研究了不同响应波长的HgCdTe器件在不同背景辐射条件下的噪声变化。

We found that it is the effect of odd-order term of f which describe the total energy collocation between forward wave and backward wave that causes the difference of modulation instability between normal dispersion region and abnormal dispersion region.

第三，根据增益谱的比较，我们从色散关系式中看到了产生这种变化的原因。正是由于存在f奇次项的影响而导致了这种在正常色散区和反常色散区变化趋势的不同。

Firstly the basic principle of OFDM and its anti-multi-path-fading are briefly introduced in this paper. Then basing on this point, we researched the basic principle, the coding designing and the algorithm of the signal detection of these MIMO-OFDM systems. At the same time, the performances of STBC-OFDM and SFBC-OFDM were analyzed and simulated under short wave circumstance, and got some useful conclusions, they have certain reference value for more research of short wave communication in future.

本文首先介绍了OFDM系统的基本原理以及它对抗多径的基本原理，然后在此基础上，对其所形成的几种MIMO-OFDM系统的基本工作原理，码字设计以及相应的信号检测算法进行了研究，详细分析研究了STBC-OFDM和SFBC-OFDM系统的性能并在短波信道下对其性能进行了仿真和对比分析，得出了有用的结论，这对以后短波通信的深入研究具有参考价值。

Keep in mind that an idealized monochromatic plane wave must be depicted as an infinite wave train.

要记住，一个理想的单色平面波应当表述为一个无限的波列。

The acquisition of ship motion and wave loading is based on the linear response of ship in harmonic wave and calculated by ship with no speed running beam sea, which is believed the most dangerous loading condition for SWATH ship according to the ship model testing results.

确定船体运动和波浪载荷的方法是以谐波中船舶的线性响应为基础，按零航速横浪来计算的。

High frequency ground wave radar remotely measures fluid velocity of sea surfaceon wave beam's direction by the emitted and received radar waves variety, so remotesensing of sea surface fluid velocity can be carried on one, two or more stations.

因为高频地波雷达是利用发射和接收雷达波频率的变化来遥感波束方向上的海面的流速，因此，高频地波雷达对海洋表层流速的遥感有单站遥感、双站遥感和多站遥感之分。

The velocities of ultrasonic wave and rock drillability are measured in perpendicular and parallel directions of the bedding plane of core samples which were cut from the approach hole of Chinese continental scientific drilling. Rock drillability index and P-wave velocity anisotropy coefficient are calculated from the testing data; and the results are discussed.

通过室内实验分别测定了岩芯垂直于和平行于地层层面方向的可钻性及声波速度，得到了岩石可钻性各向异性指数和波速各向异性系数，并对结果进行了讨论。

Correlation of drillability anisotropy index of the roller cone bit and PDC bit, the difference between drillability of the roller cone bit in perpendicular and horizontal directions of the bedding plane with the P-wave velocity anisotropy coefficient are studied respectively by means of mathematical statistics. A mathematical model is established for predicting drillability anisotropy index by using P-wave velocity anisotropy coefficient.

用数理统计方法研究分析了牙轮钻头岩石可钻性各向异性指数、牙轮钻头垂直于和平行于地层层面方向岩石可钻性差值和PDC钻头岩石可钻性各向异性指数与纵波波速各向异性系数的相关关系，建立了用纵波波速各向异性系数评价地层可钻性各向异性的模型。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷