Beat-to-BeatBNC¹⁴⁴⁶⁶⁴⁺³ 基本例句 即刻模式转换 Pulse contour method for the determination of cardiac output are attractive because it operates on a beat-to-beat, continuous non- invasive, safe basis and can be made automatic and inexpensive. 在修正已有心血管弹性管模型的基础上，提出一种能反映人体心脏射血能力、外周阻力、血管壁硬化程度和血液粘性等生理参数对血流量影响的心输出量计算公式。 cnki