Provides a platform-specific alternate character used to separate directory levels in a path string that reflects a hierarchical file system organization.
提供平台特定的替换字符，该替换字符用于在反映分层文件系统组织的路径字符串中分隔目录级别。
When the character following the file mode bits is a space, there is no alternate access method.
当跟随文件模式位的字符是空格时，就表示没有替换访问方法。
They're similar to trigraphs in the C programming language, just an alternate representation of a specific character.
字符实体类似于C编程语言中的三联符（trigraphs）：只是特定字符的替代表示。
The limited condition of alternate permutation to utilize character of chessman polgnomial sets up recurrence relations and educes two math question about formula of permutation figure.
变更错排问题的限制条件，利用棋子多项式的性质建立递推关系，推出两个问题的排列数公式。
The pulse width modulation character of voltage drive -type pulse width modulator TL494 is introduced. The applicable situation of TL494 in semi -bridge alternate switch power is also analyzed.
介绍了电压驱动型脉宽调制器件TL494的脉宽调制特性，并对其在半桥变换开关电源中的应用情况做了分析。
The pulse width modulation character of voltage drive -type pulse width modulator TL494 is introduced. The applicable situation of TL494 in semi -bridge alternate switch power is also analyzed.
介绍了电压驱动型脉宽调制器件TL494的脉宽调制特性，并对其在半桥变换开关电源中的应用情况做了分析。
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