在声波波动方程有限差分波场数值模拟中，由于计算模型的限制，导致很强的人为边界反射的产生。
In numerical wave simulation of finite difference for acoustic wave equation, due to the limitation of computer model, there inevitably exists strong artificial boundary reflection.
了解测量过程中的人为干预，人往往是（数据异常）波动的主要（原因）来源。
8226; Beaware of human intervention in a process. Humans are often a large source ofvariation.
经验表明，在创建初始数据表和用图形表示的过程的时候，人为因素是一个经常被忽视的一种波动来源变量。
Experience shows that in creating theinitial data table and in the graphical representation of the process, thehuman element is a frequently overlooked source of variation.
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