tenseness

in the harsh glare of the lights they look at each other vacuously and there is a strange tenseness with which they stare at one another.

在刺眼的灯光照射下他们呆呆地互相望着，而且他们逼视对方的目光里有一种奇怪的紧张感。

It contains a lot of information concerning the cardiovascular regulation, while extracting and analyzing of the information of HRV can offer a quantitative evaluation of the tenseness and the balance of the sympathetic and the vagus nerve activities and their effect on cardiovascular motion.

它蕴含了有关心血管调节的大量信息，对这些信息的提取和分析可以定量评估心脏交感神经和迷走神经的紧张性、均衡性及对心血管活动的影响。

Objectives: Heart rate variability ( HRV) refers to minor differences between cardiac cycle, which can offer a quantitative evaluation of the tenseness and the balance of the sympathetic and vagus nerve activities and their effect on cardiovascular motion.

目的：心率变异性（heart rate variability，HRV）是指连续心搏间瞬时心率的微小涨落，可以定量评估心脏交感神经和迷走神经的活动性、平衡性及其对心血管系统的影响。