The operational principles and the development tendencies of sky-wave, ground-wave, and microwave OTH radars are also presented.
主要论述了天波、地波、微波超视距雷达的工作机理及其发展趋势。
The shock wave forms a cone of pressurized air molecules which move outward and rearward in all directions and extend to the ground.
冲击波形成了一个由压缩气体分子构成的圆锥体，它朝四面八方向外和向后移动，一直延伸到地面。
The tide admittance analysis for the semidiurnal wave of the earth tide by use of the vector pattern of ground tilt observed at seismostations is expounded.
阐述如何利用地震台观测得到的地倾斜矢量图对固体潮半日波进行潮汐导纳分析。
A method for predicting the phase spectra of strong ground motion is presented based on the equivalent dispersion of wave motion and the approach for synthesizing ground motions is then studied.
本文在强震地震波频散研究的基础上，进行了强地震动场相位预测方法和多点地面运动时程合成方法的研究。
The time histories of ground responses and wave motions are presented, and it was found that significant wave propagations are generated when Mach number of moving load approaches or exceeds 1.0.
通过数值计算给出了地基表面振动的动力时程和三维波动场的分布，发现当移动荷载的马赫数接近或大于1.0时地基中产生明显的波动传播现象。
Short wave is good for broadcasting very long distances. The short wave signals bounce off the ionosphere that surrounds the Earth, back to the ground and then back to the ionosphere.
短波有利于长距离传输广播节目，短波信号被围绕地球的电离层反射，能在大地和电离层间来回反射。
The results may better reflect the non-stationarity of ground motion in time domain and are closer to reality than those by wave theory and stationary random vibration theory.
由于这种方法能较好地反映地面运动的时域非平稳性，所以得到的计算结果更真实。
The effect of explosive characteristic on the amplitude of explosion seismic wave is studied by means of comparing experiments on ground motion caused by FAE and TNT located near the ground.
通过近地表同药量的燃料空气炸药(FAE)和TNT爆炸地震对比试验，研究了炸药性能对爆炸地震波幅值的影响。
When the primary air blast wave from the explosion strikes the ground another blast wave is produced by reflection.
当爆炸引起的入射冲击波触及地面时，由于波的反射便产生另一冲击波。
When the primary air blast wave from the explosion strikes the ground, another blast wave is produced by reflection.
当爆炸引起的入射冲击波触及地面时，由于波的反射便产生另一冲击波。
High frequency radar is also a high frequency ground wave super resolution radar used on the seaside, and meantime it is one of projects of National 211 for building subject.
软件高频雷达也是一部在岸边使用的高频地波超视距雷达，是国家211学科建设项目之一。
The method of calculating the reflection point positions and path clearance of the electric wave at the level ground and mountainous region for the microwave relay communication is described.
本文叙述在微波中继通信中，确定和计算电波在平坦地面和起伏山地的反射点位置及路径余隙的方法。
Compared with the seismic responses of free homogeneous half space, the results present the effect of vertical cracks on the propagation of seismic wave and the ground motion near the fault site.
计算结果与均匀半空间自由场做了对比，以说明竖向地裂缝对地震波传播和附近地面运动的影响。
During the ground test of solid rocket motors, after the reversal nozzles are opened, the shock wave enters the primary nozzle. This phenomenon makes tested data processing difficult.
带反喷管固体火箭发动机地面实验时，在其反向喷管打开后，激波进入主喷管情况下，会给数据处理带来困难。
In winter, the air wave with large snowflakes, not for a moment, then on the ground covered with white snow, people stepped in the thick soft snow, really comfortable ah!
冬天，空中飘舞着鹅毛大雪，不一会儿，地上便铺满了洁白的雪，人们踩在这厚厚的软绵绵的雪上，真舒服啊！
The spatially varying effects of the ground motions especially the traveling wave effect, have great influences on the dynamic responses of long-span structures.
地震地面运动的空间变化效应(特别是行波效应)对大跨度结构的响应有很大影响。
The longitudinal stability of a ground effect craft is analyzed in the ocean wave environment.
以某型地效飞机为例，讨论了地效飞机在海浪环境下纵向稳定性的研究方法。
The HF ground wave radar receiver system based on USB2.0 technique is introduced.
介绍了基于USB2.0技术的高频地波雷达接收机系统。
For HF ground wave OTH radar to detect ship targets in the shipboard environment is faced with a range of technical challenges.
高频地波超视距雷达在舰载条件下探测舰船目标面临着诸多挑战。
The singularities of ground Penetrating Radar (GPR) echo wave signals can show the characters of objects or the layer structures under the ground sufficiently.
雷达回波信号奇异点携带了大量地下目标物的信息，是借以分析地下物质结构的重要依据。
High frequency ground wave radar for near ocean inspection and ocean remote sensor is a method that use ocean echo wave Dopier spectrum to deduce the parameters of ocean situation.
高频地波雷达近海监测和海态遥感技术是一种利用海洋回波多普勒谱反演海态参数的方法。
The distributed BST capacitor-loaded phase shifter was designed, of which the high impedance transmission line is finite ground coplanar wave-guide (FGCPW).
采用分布式电容负载型结构设计出毫米波薄膜介质移相器，其中的高阻传输线为有限宽度地共面波导。
According to the PCB board design of the SCM system, general it includes the components' selection and layout, assigning wires, ground wires design, wave filtering and shielding design, etc.
围绕单片机系统PC B板的电磁兼容设计，常规应包括元器件的选择和布局、布线、地线系统、滤波和屏蔽的设计等等。
In the paper, the travel law of seismic wave which is excited by explosive shock, and the relation between the vibration signal of ground and electric signal recorded by instruments are discussed.
讨论了爆破地震产生的地震波传播规律，以及地振动信号和仪器记录的电信号之间的关系。
The method of generating seismic wave by superposing impulse component and wide band component is used to study the interaction characteristics of near-filed ground motion in this paper.
运用脉冲分量与宽频分量叠加合成地震波的方法，来研究近场地震动的作用特性。
Microsoft's own Office dominates the market for "productivity" software, but the start-ups represented a new wave of technology designed from the ground up for the smartphone world.
微软自己的Office软件在“生产力”软件市场上占据主导地位，但这些初创公司代表了为智能手机世界从头开始设计的一波新技术浪潮。
In this paper a nonlinear dynamic analysis of a three-hinged-arch subjected to the ground explosive wave obtained from a testing site is described. The results are in accord with visual investigation.
本文根据现场实测的爆炸地震波，对离壁式三铰拱衬套进行了非线性反应分析，所得结果与爆后现场宏观调查结果基本一致。
In this paper a nonlinear dynamic analysis of a three-hinged-arch subjected to the ground explosive wave obtained from a testing site is described. The results are in accord with visual investigation.
本文根据现场实测的爆炸地震波，对离壁式三铰拱衬套进行了非线性反应分析，所得结果与爆后现场宏观调查结果基本一致。
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