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为了解噪声对机体某些生理机能的影响,我们在实验室的条件下,选择健康家兔为实验对象,观察了它们在较长期接触噪声作用下机体一些生理指标的改变。 一、实验动物的选择与分组 选择体重为1.5～2公斤心电图正常的健康雌雄兔各8只,按体重相当,雌雄各半的原则分实验组与对照组进行了实验观察。 二、实验条件 实验组动物每日暴露在噪声环境下两小时,前两周接触的噪声强度为高频100分贝(A),后两周接触的噪声强度为高频105分
In order to understand the effect of noise on some physiological functions of the body, we selected healthy rabbits as experimental subjects under laboratory conditions and observed the changes of some physiological indexes of the body under prolonged exposure to noise. First, the selection and grouping of experimental animals Select the weight of 1.5 to 2 kg of healthy normal electrocardiogram male and female 8, according to the same body weight, the principle of male and female sub-experimental group and control group were observed. Experimental conditions Animals in the experimental group were exposed to noise for two hours a day for two hours. The noise intensity of the first two weeks of exposure was 100 dB at high frequency (A) and the noise intensity at the second two weeks of exposure was 105 at high frequency