【摘要】 <正> 一、次声对一般生物的作用 人耳听不到的超低频次声（Infrasound）,直至1960年以后,由于其对环境发生污染,才逐渐为人们所注意。其中如Evans氏曾报导其声强在100分贝(以2×10^-4微巴为基数)以上、频率2至20赫间之次音,可使人发生吞咽及呼吸困难,以及头昏头疼情绪紧张或昏昏欲睡,出汗及振颤等症状;Mixon氏报导,在150分贝左右、20赫以下的强次音,可使人耳产生疼感及压力感;而用更强的次声对动物做试验表明,6至9赫的195分贝以上的次更多还原

【Abstract】 There are few public reports on the effects of treating the larvae of oceanic animals by infrasound. This paper describes the process and the results of the experiments on Sinonovacula Constricta. We find that this method makes the larvae getting high vitality, normal and uniform growth and a high survival rate. This method may be applied to many other larvae of oceanic animals. We will continue to report the progress of the experiment.更多还原