The absorption of elastic waves in rocks has been the subject of extensive theoretical and experimental study . 弹性波在岩层内的吸收问题曾经是理论上与实验上广泛研究的课题。
Based upon the near crack-tip elastic analysis, estimates of the size and shape of the plastic zone will be developed . 根据裂纹尖端附近的弹性分析，来估计塑性区的形状和大小。
From an earthquake source within an elastic medium, both types of body waves will propagate outward into the medium . 这两种体波将从弹性介质中的震源出发，向外传播到介质中去。
The design of the elastic suspension or centering system and its protective stop systems are intimately related . 弹性悬挂或定中心系统和起保护作用的限制系统的设计是密切相关的。
The total elastic coupling is the sum of the restraints due to the bending of the tapes and the twisting of the wire . 总的弹性耦合是张力带弯曲及张力线扭转所产生的约束力矩之和。
The spectrum curves determined for linearly elastic systems still have significance for nonlinear hysteretic vibrations . 线性弹性系统确定的谱曲线对非线性滞回振动仍然是有意义的。
If we let go, the elastic energy, as the spring passes through the equilibrium point, is converted to kinetic energy . 如果我们释放弹簧，那么弹簧经过平衡点时，弹性能就转变为动能。
Hence, the loss of gravitational potential energy of the block equals the gain of elastic potential energy of the spring . 因此，该物块的重力势能的减少，等于该弹簧的弹性势能的增加。
Section 6. 13 contains the treatment of an initial-value problem for the axisymmetric motion of infinite elastic medium . 第613节中包含对无穷大弹性媒质的轴对称运动的初值问题的讨论。
If the force p is reduced or made zero, the elastic force will restore the spring to its original unstretched condition . 如果力P减小或变为零，那么弹性力就使弹簧恢复当初的未伸长状态。
