The Type 6605 is equipped with two MKT-2 medium mechanical sweep gears, a BAT acoustic generator, and a TZM-52 magnetic generator.
6605型装备二套MKT-2型中型机械扫雷具，一套BAT音响扫雷具和TZM-52电磁扫雷具。
Increasing size or frequency of the sound source will lead to that the main lobe of beam become narrow, deputy flap become more, acoustic pressure in the axis become larger and the radiation of sound field become smaller. The influence of product of wave number and sound source size on directivity was discussed, and it was found that the sound field become intense, energy become focused and its directivity become better with the increase of product value. A further analysis on the directivity character of radiation sound field of combination plane arrays of line and rectangular array was carried out on the basis of investigating directivity of round and rectangular piston transducers. Distribution and directivity character of M×N 2×2, 3×3, 3×8 array of line combinations plane arrays and M×N 2×2, 2×6 rectangular combination plane arrays were analyzed respectively. It was found that the more array number, the more complex for the distribution. In the direction of the more array number will make sidelobe suppression, the main lobe relatively prominent and energy more concentrated. The influence of liquid/solid interface on sound field distribution has been discussed, taking the water/steel interface for example, and it was found that the acoustic pressure in the solid will increase when the wave propagates from the small acoustic impendence medium to the large one.
对直径为10mm、20mm、50mm和发射频率为1MHz、2MHz、5MHz的圆形活塞换能器声场声压分布进行比较，发现频率不变声源尺寸增大或声源尺寸不变频率增大，声束的主瓣都会变窄，辐射范围缩小，副瓣增多，轴线上声压增高；对波数与声源尺寸的乘积对指向性的影响进行讨论，发现随着乘积数值的增大其声场变得尖锐，能量集中，指向性变好；在对圆形活塞换能器和矩形活塞换能器声场声压分布及指向性进行分析的基础上，进一步分析线列阵组合平面阵和矩形阵组合平面阵辐射声场的指向性特征，分别对M×N为2×2、3×3、3×8的线列阵组合平面阵和M×N为2×2、2×6的矩形阵组合平面阵的指向性分布特征进行分析，得到阵元个数及排列对指向性分布的影响规律为：阵元个数越多，指向性分布越复杂，M和N不等的阵列上阵元数较多的方向旁瓣会得到相应的抑制，主瓣比较突出；以水/钢界面为例对液/固界面对声压分布的影响进行讨论，得到声波从声阻抗较小的液体入射到声阻抗较大的固体中声压会突然变大，增大的幅度取决于透射系数。
The interactions between acoustic waves and light in a solid medium.
在液体媒质中，声波和光波之间的相互作用。
Under the same fluid medium saturated, the wave velocity is in reverse proportion with the rock granularity. According the actual P-wave and S-wave data, the thesis establishes the binomial formula of transformational relation between P-wave and S-wave using the least squares method. The thesis realizes transformation of the different frequency wave velocity using the viscoelasticity frequency dispersion equation, resolving the corresponding relation of lithological-electrical parameters, establishing the elastic parameter explanation model and dynamic and static elastic parameters transformation directly basing the simulation formation temperature, the formation pressure and the fluid saturated. Basing on different lithology, the thesis establishes mudstone`s compressing strength and the new sand compressing strength formula including information of rock density, acoustic velocity and content of clay, resolving the problem of compressing strength interpretation difficulty. And the thesis forms the rock mechanics parameter experiment, well logging interpretation and the assessment method system.
研究结果表明，饱水岩样波速度大于干燥岩样波速，相同饱和流体介质条件下，波速与岩石粒度成反比，同时利用实测纵横波数据采用最小二乘法进行二项式拟合获得研究区横波时差计算公式；采用粘弹性频散方程，实现不同频率声波之间的转换，解决了岩电对应性问题，直接建立起模拟地层温度、压力及饱和流体性质下的岩石力学强度参数、弹性参数解释模型及动静转换关系式；在区分岩性的基础上，考虑泥质含量对岩石抗压强度的影响，建立起模拟地层条件下砂岩、泥岩抗压强度测井解释评价方法，解决了岩石抗压强度测井解释难的问题，同时形成了岩石力学参数试验-测井解释评价方法体系。
Results? 6 cases in X-ray film revealed round or oval stones in areatus distribution in the areas of renal papillae and medulla. 3 cases of IVP revealed cystic or hair-brushed dilation. 5cases in B-ultrasound revealed little anechoic area and strong echo light spot in radial distribution with acoustic shadow. Unenhanced CT of 6 cases revealed spotted or areatus stones surrounding minor renal calices with collecting tube system dilation and enhanced CT showed artifacts of stones magnification because of the collection of contrast medium around the stones. Conclusion?
结果 X线平片检查6例，表现为肾乳头、髓质区见簇状排列的圆形、椭圆形致密影；IVP检查3例，显示肾集合管囊状、刷子状扩张；B超检查5例见肾髓质内呈放射状分布的小无回声区和强回声光点，其后方伴有声影；CT检查6例，平扫呈环绕肾小盏分布的点状或簇状钙化灶，集合管囊状扩张，增强后因钙化周围的集合管内造影剂聚集，造成钙化影增大的假象。
The detailed calculations show that the acoustic impedance ratio has significant effect on the surface waves: For the systems with AIR≈1, neither complete band gaps nor directional band gaps do exist for the bulk waves, but the SW-SW or PSW-PSW band gaps or the SW-PSW band gaps exist; for the systems with a medium or high AIR, there may exists a critical filling fraction value at which the SW and PSW will interchange; the PSW is dominant over SW in the systems with a higher AIR.
计算发现声阻抗比对表面波的影响很大：对声阻抗比在1附近的体系，虽然体波不易产生完全带隙甚至方向带隙，但存在表面波之间或表面波与伪表面波之间的方向带隙；对声阻抗比在中高值的体系，可能存在表面波和伪表面波转化的填充比临界值；声阻抗比越大越不易出现表面波，只存在伪表面波。
The main products are various types of ships below 10, 000DWT, big unit of metal structure, high, medium and low speed diesel engines of big horse-power, spare parts of the diesel engines, marine steering gears, mooring winches, windlasses, deck cranes, big size forgings and castings, shafts, propellers, anchors and anchor chains, acoustic devices, optical instruments, special equipment for shipbuilding, paper machines, metallurgical machinery, cement machinery, textile, machinery, hydro-power station equipment, petrochemical equipment, various pressure vessels ranging form I, II, III, hydraulic cylinders, titanium alloy products, rubber-products, plastic injection molding machines, pad print machines, alternators and generating sets, motor-cycles, valves, electrodes, catholic protection anodes, hand tools etc.
公司所属企业生产的主要产品有万吨级以下的各类型船舶、大型金属结构件、高、中、低速大功率柴油机、柴油机零备件、船用舵机、锚铰机、克令吊、大型锻件、大型铸件、轴系、推进器、锚及锚链、水声仪器、光学仪器、造船专用设备、造纸机械、冶金机械、水泥机械、纺织机械、水电站设备、石油化工设备、I、II、III类各种压力容器、液压油缸、钛合金制品、橡胶制品、注塑机、移印机、发电机、摩托车、阀门、电焊条、牺牲阳极、手工具等。
The roots of 8-year-old Ginkgo biloba saplings were partially excised to three degrees to study the effects of root-excision on the trunk hydraulic traits and growth status of the saplings. The three degrees were severe medium, and light (8:1, 10:1 and 12:1 of excised root diameter to base diameter of tree trunk, respectively). Physiological parameters including trunk ultrasound acoustic emission signal branch percentage loss of hydraulic conductance, sap flow flux, and leaf stomatal conductance, transpiration rate and water potential were measured periodically after root-excision.
以8年生银杏为试材，采用不同程度的断根处理，测定处理后树体超声(ultrasound acoustic emission，UAE)信号、枝条栓塞程度(percentage loss of hydraulic conductance，PLC)、树干液流通量、气孔导度、蒸腾速率以及叶片水势等生理指标，分析断根对银杏树体水力特征及生长状况的影响。
The following are the expressions for the mean pressure set up at the detection plate and for the time of the signal to progagate from the radiator to the detector:这里是1个公式, 省略） where Re is the real part of the expression appearing within the braces, 0 is the density of the medium, vo is the amplitude of the vibrational velocity, c is the speed of sound in the medium, d2 = I +(r/zcos 8, z is the distance between the emitting and receiving plates, B is the angle between the axis of the acoustic channel and the axis of the tube, r = vro/c, v is the flow speed of the fluid, d is the diameter of the pipe, m is the circular frequency, k is the wave number, where a is the radius of the plate (this is taken as the same for the emitting and receiving plates for simplicity, but there is no difficulty in discussing plates differ~mg in radii), ,~ is the vibrational frequency of the emitting plate, and The triple sums in the expressions for N~ and N2 may be neglected if the flow speed is low, since the contributions for these become negligible.
以下的表情为代表的压力设置在检测板甲，手持骑枪和时间的信号 progagate从散热器排出到检测器(这里是1个公式、省略)。在什么地方才是真正的出现在背带，表现为0密度的吗当时的媒介的振幅振动速度、c是声音的速度中、d2 =我+ r/z，8、z是距离的发射和接收板、B之间的角度对声信道和轴轴管，r = vro/c，v的流体的流动速率公式，d 管直径的圆频率，m，凯西是波数公式* n，一个是半径的板(这是作为相同的发射和接收吗为了简单，但板板是毫无困难地讨论不同半径)、镁-，~的振动频率的发光，。总结了三倍的表达方式和N2 ~能忽略的流量速度低，因为这些变得微不足道的贡献。
Two new medium parameters related to acoustic attenuation are introduced and an acoustic propagation coefficient is defined.
本文引入两个与声衰减有关的介质参量，定义了声传播系数；
Also studied the cylindrical fluid region and two-phase medium with the acoustic pressure within the region to increase the distance from the cylinder center was studied.
还研究了圆柱流体区域和双相介质区域内声压随离圆柱中心的距离增加的变化规律。
This paper starts with a review related to the tomography for acoustic/clastic waves and then proceeds to the formula derivation for medium parameters from observed wave-fields.
本文讨论了声波及弹性波层析成像技术，导出了由观测波场提取介质参数的公式。
The application of BEM to the calculation of acoustic radiation from closed surfaces in an infinite acoustic medium has the advantages of less memory space, higher accuracy and faster calculating speed.
采用边界元法求解封闭面在无限域声媒质中的辐射声场具有内存小、计算精度高、速度快等优点。
Because the acoustic impedance value of GRP hull in normal direction is relatively close to water's, the acoustic medium property of the GRP hull is applied to analyze the fluid-structure interaction in the early time after the shock wave impinging the wet surface.
所谓修正的双重渐近方法是考虑了玻璃钢船体法向的声阻抗比较接近于水的声阻抗，所以玻璃钢材料的声学介质性质被用来分析湿表面上早期的高频流固相互作用。
Assuming that seismic wave in subsurface medium is described by 2-D acoustic equations, we can use the adjoint theory of the distribution-parameter control system and the adjoint equation of original state equation to deduce the gradient formulae of velocity and density.
假设地震波在地下介质中的传播用二维声波方程来描述，则利用分布参数控制系统的伴随理论、引入原始状态方程的伴随方程，可同时导出速度和密度各自的梯度公式、在反演计算中。
Because the wave type of leaking of the acoustic wave utilizes the fluid while managing to act as with the low frequency under 5Hz the medium isconveyed, measuied and has be already sinked down by various kinds of noises then by the sonar receiver, this paper applys the sonar pre-amplifier to amplify it and amplify the low frequency filtering signal step by step in accordance with the micro-mirror character in wavelet transform. Then, apply correlation method to locate the leakage spot. We have put this technology into effect and benefit from the technology.
由于音波的泄漏波型是以5HZ以下的低频率利用管内的流体当介质传送，被声纳接收器检测到时已被各种噪声淹没了，本文将运用声纳前级放大器将其放大，然后运用小波具有的多显微镜特性，把低频信号逐次地放大来提取此信号，最后运用互相关理论来确定其泄漏点，得到了实质性的效果。
The Pseudo Surface Acoustic Wave (PSAW) is special mode of SAW on the anisotropic medium and piezoelectric crystal. It has important applications on the SAW techniques.
赝表面声波（PSAW）是各向异性介质和压电介质中存在的一种特殊的表面波模式，它在声表面波技术中有重要的应用。
A New Method for Mass Flow Measurement Based on Acoustic Damping of a Rheologic Medium
基于流变介质声阻尼的质量流量测量新方法
To investigate into the effect of the change in both acoustic impedance of ore like medium and the structure of cylindric charges on fine productivity, a test on fragmentation by blasting was conducted in concrete models.
通过混凝土模型的爆破破碎实验，探讨了矿岩介质的波阻抗及柱状药包结构的变化对粉矿产出率的影响。
With the application of integration differential method, the kinematic equation and absorption boundary under free boundary condition are integrated. Based on Gauss theorem, the second order display format for acoustic travel in 2D heterogeneous isotropic medium is obtained.
利用积分差值法，将运动方程、自由边界条件上的吸收边界条件进行积分，根据高斯定理，得出二维非均匀各向同性介质中的声波传播的二阶显式格式。