Furthermore, a ring CCO based frequency tuning scheme is proposed to reduce frequency variation.

设计了一种基于环形CCO的锁相环自动频率调谐结构来减小频率偏差。

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Objective To observe functional changes of the right ventricle (RV) during off-pump coronary bypass grafting (OPCABG) by using a continuous cardiac output (CCO) monitoring.

目的应用连续心排血量测定的方法，观察在进行非体外循环冠状动脉旁路移植术（OPCABG）中右心功能的变化。

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