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- The recent advances in ultrasonic guided wave testing technique are summarized. 摘要综述近年来超声导波检测研究的最新进展。
- Due to the dispersive and multi-mode characteristics of guided waves,the pulse of energy will spread out in space and time as it propagates. 在分析超声导波时间-空间传播特性基础上,建立了超声导波检测的空间表述模型。
- Our theoretical analysis produces the dispersion curves of longitudinal modes of ultrasonic guided waves in liquid-filled pipes with viscoelastic coatings. 理论分析得到了带粘弹性包覆层充液管道中纵向模态的频散曲线。
- Guided wave second-harmonic (SH) generation can not be phase matched automatically by Cerenkov radiation scheme. 用波导产生倍频波时,如果倍频波进入辐射模区,仍然有相匹配问题。
- Guided wave inspection is very attractive in this application as it is particularly sensitive to transverse vertical defects since the waves travel along the length of a rail. 由于波沿着轨道长度方向传播，在横向/垂直向不合格品检验中非常灵敏，所以导向波检验在这方面是非常有吸引力的。
- Based on the ultrasonic guided wave technique and the dispersive waveform prediction method, a method about how to image defects in pipes is presented. 摘要在导波传播理论和频散波形预测理论的基础上，研究了超声导波在检测管道时，如何利用时域波形重构缺陷图像的问题。
- The transmitter generates guided wave in the plate according to magnetostrictive effect,and then it propagates in the plate and is reflected by the damages and edges of the plate. 根据反射信号的到达时间和波在板中传播的速度,可判断出板中缺陷所在位置。改变恒定偏置磁场与时变磁场的方向可以在板中激励不同波型的导波。
- TA Dean,LIU Zhenqing.Analysis of dispersion characteristics of ultrasonic longitudinal axisymmetric guided waves in viscous liquid filled pipes[J].Acta Acustica,2005,30(3):193-200. [5]他得安;刘镇清.;充粘液管材中超声纵向轴对称导波的频散特性分析[J]
- The mechanism of zigzag dispersion curves in the Rayleigh wave exploration is theoretically analyzed.The propagation characteristics and interrelation of the guided waves are studied thoroughly. 摘要对瑞利波勘探中“之”字形频散曲线形成的物理机理进行了理论分析，研究了诸波模的传播特性及相互关系。
- Applying classical wave theory, a concept of equivalent elastic modulus on propagation speed modification of guided wave through "variable cross-section" of metal bar embeded layer was put forward. 摘要运用波动的经典理论，提出了导波在金属杆嵌入层“变截面”传播时波速改变的“等效弹性模量”的概念。
- STUDY ON GUIDED WAVES IN A STEP PLATE 台阶型厚度变化板中导波的研究
- It is necessary to process the waveforms of long spacing sonic logs and identify the associated guide waves. 但是必须对长源距声波测井波形进行处理,分辨出相应的导波。
- Stoneley wave is a kind of guide waves propagating along the liquid\|solid interface in well. 斯通利波是一种沿井壁传播的声波,当声波脉冲与井壁和井内流体的界面相遇时就会产生斯通利波。
- The lights in the harbour guided the ship to port. 海港的灯引导船只进入港口。
- The storm heaved the sea into mountainous waves. 风暴在海面上掀起万丈波涛。
- Be guided by your sense of what is right and just. 做事要有是非观念和正义感。
- Longitudinal ultrasonic guide wave dispersion equation of inviscid liquid-filled pipe is analyzed theoretically. 从理论上得到了充非粘性液体管道中纵向超声导波的频散方程。
- It is the focus to get eigen equation of all kinds cross section waveguide in guide wave optics. 求解各类截面波导的本征方程,一直是导波光学研究的焦点问题。
- We went on a guided tour round the castle. 我们随着导游参观了城堡。
- The huge waves battered the wrecked ship to pieces. 巨浪将那艘失事的船只冲击得支离破碎。
