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1·Propagation characteristics of longitudinal ultrasonic guided waves of steel rod embedded in infinite medium are studied in theory.

从理论上分析高频纵向超声导波在埋于无限大介质中钢杆传播的特性。

2·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.

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。

3·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.

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。

4·The compact 4-component 2-D finite-difference frequency-domain algorithm (2-D CFDFD) is one of the effective methods to calculate the propagation properties of ideal guided wave structures.

四分量紧凑格式二维频域有限差分（2-D CFDFD）算法，是求解理想导波结构传输特性的有效方法之一。

5·And the guided-mode propagation analysis was used to confirm the analytical results.

用导模传输分析法验证了计算公式和重叠成像规律的正确性。

6·A generating approach to the guided electromagnetic wave propagation regularity with time in waveguides based on 3ds MAX is proposed.

提出了基于3ds MAX的导行电磁波时空运动规律的生成方案。

7·Based on the anchorage mechanism of bolts, a model for the anchorage system is established. An embedded bolt can be regarded as a waveguide according to the propagation properties of guided waves.

根据锚杆的锚固机制，建立锚固体系模型，并由导波的传播特性提出把锚固锚杆作为波导来处理的思想。