There are five iterator categories: input, output, forward, bidirectional, and random access.

标准库定义了五种迭代器类别：输入、输出、前向、双向和随机访问迭代器。

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According to the signal can be divided into sine wave signal, function (wave) signals, pulse signals and random signal generator, and other four major categories.

按信号波形可分为正弦信号、函数(波形)信号、脉冲信号和随机信号发生器等四大类。

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According to the signal can be divided into sine wave signal, function (wave) signals, pulse signals and random signal generator, and other four major categories.

按信号波形可分为正弦信号、函数(波形)信号、脉冲信号和随机信号发生器等四大类。

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