That is to say the "crying sound" is an exact result of this expansion-contractionprocess.
这也就是说，岩石的“哭声”正是由这种膨胀和收缩的过程产生的。
2
Its major signs are heat, redness, swelling, and pain. The process begins with brief contraction of nearby arterioles.
主要的征象是热、红、肿、痛。其过程始于组织受损的邻近小动脉的收缩。
3
For the randomness of classical GA which appears in calculation process, the contraction mapping GA is applied to make the calculation asymptotically convergent.