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街道眼
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街道眼
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street eyes
街道眼
在城市街区中保持小尺度的街区和各种小店铺,以增加日常生活中人们相互见面和交流的机会与频率,从而预防和阻止一些在人员稀少的情况下容易发生的违法事件,增强街道安全感的安全防范措施。
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frequency-shift keying
frequency-shift keying, FSK
frequency-shift keying modulation and demodulation
frequency shift of scattering light
frequency shift theorem
frequency-shift track circuit
frequency-size distribution
frequency spectrum
frequency stability
frequency stability criterion
frequency stability measurement
frequency stabilization
frequency stabilized laser
frequency standard
frequency standards
frequency step
frequency sweep mode
frequency swept laser
frequency switching
frequency synchronization
frequency synthesis
frequency synthesized signal generator
frequency synthesizer
frequency table
frequency theorem
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