在自由空间量子密钥分配中，单光子源采用具有泊松分布的高度衰减激光脉冲，量子密码术协议采用BB 84和B92协议。
Highly attenuated laser pulses with Poisson distribution are used as single-photon sources and the BB84 and B92 protocols are used for free-space quantum key distribution.
当面临几个强大的信号，所有信号衰减的广泛耐药(包括DX)内的高度。
When confronted with several strong signals, the XDR attenuates all signals (including DX) to a high degree.
高度不匹配之电源与负载抗，传输线上多重反射之衰减时间很长。
High source and load reflections require a long time for multiple reflections to decay.
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