PCG coupler.
心音图耦合器

ECG and PCG data automatic analyser
心电心音数据自动分析装置

airconductive dynamic PCG microphone
气导式压力型心音图测量用微音器

Results It was difficult in early diagnosis of PCG and with a poor prognosis.
结果原发性胆囊癌早期诊断困难，预后差。

In this paper a new design for orthogonal three channel ECG and PCG signal sampling system was introdued.
本文介绍了一种正交三导联心电和心音信号采集系统。