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1·Some character properties are independent of the context in which the character is used, for example, whether or not a character is customarily used as a numerical digit.

有些字符属性与使用字符的上下文无关，例如，某一字符是否被作为数字使用就与上下文无关。

2·The method of digit fast sine sweep frequency is used in nonlinear suspention system frequency feature numerical solution.

本文针对非线性悬架，研究通过数字快速正弦扫频获得其频域特性的数值解的方法。