声波

The study of ultrasonics was deepen increasingly in cleaning of container and vegetable,extraction of chemical component,sterilizing,improving quality,food detecting and improving activity of enzyme due to its transfering characteristic and a series of effects in physics and chemistry such as cavitate effect.

由于它的声波传递特性和产生空化等一系列物化效应，使得它在容器及果蔬表面清洗、化学成分提取、杀菌灭酶、改善质地、食品检测、改善酶活性等方面得到日益广泛深入的研究。

"Bat:any of various nocturnal flying mammals of the order Chiroptera, having membranous wings that extend from the forelimbs to the hind limbs or tail and anatomical adaptation s for echolocation, by which they navigate and hunt prey."

蝙蝠：一种翼手目的夜间飞行的哺乳动物，它们具有能从前肢伸到后肢或尾巴的膜状翅膀，其生理结构能够靠声波定位，并以此导航和捕食。

"Bat:any of various nocturnal flying mammal s of the order Chiroptera, having membranous wings that extend from the forelimbs to the hind limbs or tail and anatomical adaptations for echolocation, by which they navigate and hunt prey."

蝙蝠：一种翼手目的夜间飞行的哺乳动物，它们具有能从前肢伸到后肢或尾巴的膜状翅膀，其生理结构能够靠声波定位，并以此导航和捕食。

"Bat:any of various nocturnal flying mammals of the order Chiroptera, having membranous wings that extend from the forelimbs to the hind limbs or tail and anatomical adaptations for echolocation , by which they navigate and hunt prey."

蝙蝠：一种翼手目的夜间飞行的哺乳动物，它们具有能从前肢伸到后肢或尾巴的膜状翅膀，其生理结构能够靠声波定位，并以此导航和捕食。

"Bat:any of various nocturnal flying mammals of the order Chiroptera, having membranous wings that extend from the fore limbs to the hind limbs or tail and anatomical adaptations for echolocation, by which they navigate and hunt prey."

蝙蝠：一种翼手目的夜间飞行的哺乳动物，它们具有能从前肢伸到后肢或尾巴的膜状翅膀，其生理结构能够靠声波定位，并以此导航和捕食。

By use of the 3-D display tool, We can combinate the different results of forward modeling and inverse (mainly include surface data, VSP data and snapshot record), and display them in different direction, then we can compare them very efficiently.

有了三维显示工具，声波与弹性波正反演的各类数据结果(主要包括地面数据、VSP数据与时间快照)就能够在三维框架上进行方便的组合显示，这样就能有效方便的查看和比较结果。

Based on above techniques, the pre-stack reverse-time depth migration of compressional seismic wave is achieved in two dimensional space.

在上述成果的基础上实现了声波方程的叠前逆时深度偏移。

And continuous measurements of compressional velocity and shear velocity were made in the course of displacing.

由于疏松砂岩声波纵、横波速度的影响因素较多，因此有必要对各影响因素进行定量研究。

Sonar survey has a very high resolution and signal emission frequency, so it can be used to obtain high-quality shallow profile and the textural and structural details of sedimentary strata and indicators of deltaic deposits such as oblique bedding.

声波探测具有很高的分辨率和信号发射频度，可以获得高品质浅地层剖面，显示出沉积地层的结构与构造细节、斜层理等三角洲沉积标志特徵。

The thesis toke problem of deformation and destroying of the earth mass as it's invention, integrated the earth mass's existing environment, ingredients and macrostructure, discovered mechanism of deforming and destroying, made clear the relationships between those.Through outdoors samples, indoors examination surface wave testing and audio wave testing ,do some research on physical, mechanical, chemical, disintegrative and dynamics property of stuff of earth mass and proposed four kinds of earth mass's stuff formed type;under the guidance of theory of dominant structural surface and adopting precision measurement of structural surface, proposed three dominant kinds of structural surface assembling;based on those , proposed four types of earth mass's deformation and destroying, carried out rationed estimation of stability on four types, then definite the characters of deforming and destroying and controlled relation between environment , stuff, macrostructure and deformation and destroying of mass earth, and breakthrough ordinary principle about soil's deformation and destroying, further proofed the theory of earth mass cybernetics's popularization

本学位论文针对台地危险土体的变形破坏问题，将土体的赋存环境、土体物质组成和土体宏观结构的研究紧密地结合，阐明了土体变形破坏的机制，明晰了土体变形破坏与土体的赋存环境、土体材料组成、土体宏观结构三要素之间的关系，并从土体的物质组成的角度，以野外取样、室内实验、现场面波、声波无损伤测试为手段，研究了土体物质的物理、力学、化学、矿物、崩解性、动力学性质，提出了研究区内土体物质成分的四种组合形式；以优势结构面理论为指导，以结构面的精确测绘为手段，通过统计、归纳与分析，提出三种有利于台地危险土体变形破坏的优势组合形式；据此提出了具有广泛代表意义的台地危险土体变形破坏的四种模式，并对其进行稳定性评价，从而明确了危险土体的宏观结构对变形破坏的控制作用，映证了土体结构控制论。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。