通过在阵列天线多载波ds - CD MA系统下构造统一的信号模型，实现了基于子空间的信道盲估计。

By unified signal model of antenna array Multicarrier DS-CDMA system, the subspace-based blind channel estimation is achieved.

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信号识别颗粒（SRP）在真核细胞中如何定向和转运蛋白质是非常清楚和统一的。

How proteins are targeted and translocated mediated by signal recognition particle (SRP) in eukaryotic cell is very clear and uniform.

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第二十五条全国实行统一的道路交通信号。

Article 25 the uniform road traffic signals shall be applied throughout the country.

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