开始的加速是由于强激波相关的磁场压缩导致的。
The initial acceleration is due to the strong shock-related magnetic field compression.
根据激波理论，爆炸产生压力脉冲并以压力波的形式传播，既有压缩波也有膨胀波。
According to the shock theory, the ejecta produced by explosion form the pressure pulse, and it spreads in forms of either compression waves or expansion waves.
压缩波的合并产生激波，它的强度被随后并入的压缩波或膨胀波分别增强或减弱。
Shocks are formed by merge of compression waves with each other and its magnitude is enhanced or declined by catching compression waves or expansion waves behind the shock respectively.
用分子动力学方法可以有效地研究凝聚介质的激波压缩，并在许多领域得到了广泛应用。
The shock compression of condensed matter can be effectively dealt with by molecular dynamics, and has been applied to many fields of science.
激波对磁云内禀磁力线的压缩和旋转被证实是增强地磁效应的有效机制。
The compression and rotation of the magnetic field serve as an efficient mechanism to cause a large geomagnetic storm.
通过稳态和不稳态的高速可压缩流体超音速激波和激波传播特性的分析，可以评估该算法的效率。
Efficiency of the combined procedure was evaluated by analyzing supersonic shocks and shock propagation behaviors for both the steady and unsteady high-speed compressible flows.
在激波穿越磁云后，原先被高度压缩的磁云本体在其内禀磁弹性的作用下会逐渐恢复为扁圆的几何形态。
After the shock passage, the previously compressed MC body is gradually restored to an oblate morphology under the action of its inherent magnetic elasticity.
第四章主要研究二维等嫡可压缩流轴对称活塞问题激波解的整体存在性。
In Chapter IV, we focused on the global existence of 2-d piston problem in isentropic compressible flow.
所发出的前向快压缩波经非线性变陡形成快激波。
Meanwhile the forward fast compression waves become a fast shock through nonlinear steepening process.
这些激波压缩了已存在的气体，造成了恒星的诞生。
在讨论了这种近似的适用条件后，分别用它就一维流的情况研究了连续流、稀疏波和压缩波以及激波等运动形态。
After discussing the conditions under which this approximation could be used, it is applied to study various 1-dimensional flows: continuous flows, rarefaction, compression waves and shock waves.
在讨论了这种近似的适用条件后，分别用它就一维流的情况研究了连续流、稀疏波和压缩波以及激波等运动形态。
After discussing the conditions under which this approximation could be used, it is applied to study various 1-dimensional flows: continuous flows, rarefaction, compression waves and shock waves.
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