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This paper analyzes the action of air shock wave and compressive wave in oil to the basement structure, and confirms the shock wave shape and each parameter.

考虑到这种情况以及世界范围内的人防工程建设的平战结合趋势，我国制定了"长期坚持、平战结合、全面规划、突出重点"的人防工程建设方针。

It can measure the sine wave, square wave, triangle wave frequency.

它可以测量正弦波、方波、三角波的频率。

Power should be sinusoidal wave form, the fundamental wave does not exceed 5% of harmonic wave.

电源的波形应为正弦波，谐波分量不超过基波的5%。

Results show that amplitude of displacement excited by vertical incidence wave is larger than that excited by inclined incidence wave and not influenced greatly by the incidence angle. In vertical incidence, amplitudes of displacement of two points at the same altitude along each cavern are basically identical and maximum relative displacement occurs between top and bottom point of the cavern. While in the case of inclined incidence, displacement amplitude on sides meeting the wave is larger than that on leed sides, and maximum relative displacement occurs on left skewback and bottom of the cavern.

结果表明，位移幅值受入射角度的影响不敏感，竖直入射比斜入射情况要大；竖直入射时，各洞室两侧同一高程处的位移幅值基本相同，相对位移差最大部位为洞顶与洞底，而斜入射时迎波面比背波面一侧位移大，且相对位移差最大部位为洞室迎波面的左拱座与洞底。

The stealth warplane for the microwave radar usually have complicated structures with the coating of wave absorption. On the base of calculation and modeling of the geometrical structure of the warplane in real size, the HF RCS of the air crafts under two different polarizations in different direction have been calculated with the FDTD. The result shows that the above mentioned stealth warplane have the obvious characterstics of frequency resonance, polarization and the relatively large RCS in HF Band 10-30dBm2, which can be used as the theoretical reference for selection of working frequency for sky wave OTH Radar and it also means that the sky wave OTH radar has good capability of anti-stealth targets quantitatively.

对微波雷达具有隐身作用的飞机，其形体较为复杂且表面涂敷有强吸波材料在对一种具有隐身几何外形结构实际尺寸飞机进行计算建模的基础上，文中采用FDTD技术得到了两种极化状态下该飞机无涂敷时不同方向上的短波雷达截面RCS值其结果显示了这种隐身几何外形飞机在短波波段有明显的频率谐振特性、极化特性和较大的RCS10-30dBm2，可为天波超视距雷达在选择工作频率时提供理论参考，并定量地说明天波超视距雷达具有较优的反隐身目标能力

Finally, when regarding the component wave of irregular wave spectrum as regular wave1 and calculate the wave refraction In shallow water by Snell's law, the result is different from the result analysis by directional spectrum.

将波谱中各频率之波浪视为单一规则波，用 Snell定率计算其折射角，其结果与实测结果并不一致，表示方向波谱中各频率主方向无法利用规则波之原理以简化条件的方法求出。

The mechanism of spallation is analyzed as a result of the interaction of the unloading wave and reflected stress wave. The propagation of laser-induced stress wave is also further investigated, and the influences of film thickness on spall thickness as well as the time when spallation begins are predicted.

分析了层裂机制，得出靶材是在卸载波及被反射的压力波的共同作用下发生层裂；探讨了激光诱导压力波的传播规律，预测了不同靶厚下的层裂厚度及其对层裂开始时间的影响。

In order to use spectral analysis theory to calculate s econd-order wave forces which naval architectures suffered in the random sea wa ves, the second-order wave forces which naval architectures suffered in any one regular wave or any two regular waves should be calculated firstly.

为了采用谱分析方法预报海洋结构物和船舶在随机海浪中所受的二阶波浪力，必须先求得海洋结构物和船舶在任意单色波和双色波中受到的二阶波浪力。

Combined the application in practice, the detecting effects in wave impedance with spherical wave and artificial wave are discussed.

低应变反射波法在桩基完整性检测技术中愈来愈占有重要的地位，但简便易行的优点也造成了检测结果精确性的不足，本文结合反射波法在实践中的应用，就球面波、人为造成波阻抗变化在检测中的影响等几方面和读者进行探讨。

When you're stressed, your wave is jagged and spiky; when you're relaxed, your wave becomes smooth and consistent, like a sine wave.

当你感到有压力，你的波型变得犬牙交错；当你放松时，你的波浪变得光滑和一致，像一个正弦波。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。