这一形式简单、使用极方便的数学模型在非瞬间反应系统的成功应用，更有力地证明其对某些类固液反应的适用性。
This success in simulating non-instantaneous reaction strongly manifests the capability of the model in describing the behavior of some solid-liquid reactions.
本文提出计算二维非定常位势流动的有限差分法，流动是因自由表面任意瞬间扰动所产生的。
A finite difference method is developed for computing the two-dimensional transient potential flow generated by an impulse on the free surface.
一条古街，一座千万年的山在瞬间就能将它们变消失或者面目全非。
A archaic street and thousand years mountain suddenly disappear or can not be identified.
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