For this pacemaker, the width and rate of stimulate pulse could be adjusted outside to construct heart failure models of various cardiac impairment degrees.
该心脏起搏器可以在体外调节起搏脉冲的宽度和频率，实现心功能损害程度不同的心衰模型的复制。
For this pacemaker, the width and rate of stimulate pulse could be adjusted outside to construct heart failure models of various cardiac impairment degrees.
该心脏起搏器可以在体外调节起搏脉冲的宽度和频率，实现心功能损害程度不同的心衰模型的复制。
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