The PFM technology includes two kinds modes: constant width PFM and SWFM.
脉冲频率调制又包括了两种方式，即等宽pfm和SWFM。
The analogy includes two kinds, the integrated analogy and the structural analogy.
汉语的类推包括组合类推和结构类推两种。
Its mental influence on people also includes two kinds of tendency, optimism or pessimism.
金融技术化对人的心理影响存在乐观和悲观两种倾向。
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