Then the development of fixture technology was reviewed and modular fixture (MF) patents in China,US and Europe are classified according to problems they solved.如果是 中频 解释下为哈叫中频,

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Then the development of fixture technology was reviewed and modular fixture (MF) patents in China,US and Europe are classified according to problems they solved.如果是 中频 解释下为哈叫中频,
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Then the development of fixture technology was reviewed and modular fixture (MF) patents in China,US and Europe are classified according to problems they solved.如果是 中频 解释下为哈叫中频,
Then the development of fixture technology was reviewed and modular fixture (MF) patents in China,US and Europe are classified according to problems they solved.
如果是 中频 解释下为哈叫中频,

Then the development of fixture technology was reviewed and modular fixture (MF) patents in China,US and Europe are classified according to problems they solved.如果是 中频 解释下为哈叫中频,
这不是简写么.modular fixture=MF.组合夹具的patents专利.
肿么会是中频?

modular fixture (MF)成组夹具

中频有两种意思:
其一、按频率的高低来划分时。中频(MF,Medium Frequency)是指,频段由300KHz 到 3000KHz的频率,多数作AM电台。在白天传播距离短,夜间由于可以利用电离层反射信号,所以可以作远距离传播。但是较易受到其它电波干扰。
其二、按其在电路中的位置与作用来划分时:中频信号是指高频信号经过变频而获得的一种信号.为了使放大器能够稳定的工作...

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中频有两种意思:
其一、按频率的高低来划分时。中频(MF,Medium Frequency)是指,频段由300KHz 到 3000KHz的频率,多数作AM电台。在白天传播距离短,夜间由于可以利用电离层反射信号,所以可以作远距离传播。但是较易受到其它电波干扰。
其二、按其在电路中的位置与作用来划分时:中频信号是指高频信号经过变频而获得的一种信号.为了使放大器能够稳定的工作和减小干扰.一般的接收机都要将高频信号变为中频信号.

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应该翻译成: 模组固定设计专利

modular fixture 组合夹具,这里提到的是组合夹具的专利权