There are experimental designs, using twins, that can find out the extent to which intelligence and mortality are linked because they share environmental and genetic influences.
对双胞胎进行设计实验可以查明智力和死亡率之间的关联程度，因为双胞胎接受着同样的环境和遗传因素的影响。
Experimental model animal can survive for a long time with low mortality, benefiting for researches on chronic cerebrovascular diseases.
模型动物存活时间长，死亡率低，有利于慢性脑血管病的研究。
The experimental results reveal that the infective mortality of larva microsporidiosis reduces with the increase of larva instar and increases with the increase of spore concentration.
试验结果表明：幼虫感染微孢子虫病的死亡率随幼虫龄期的增大而减弱，随孢子浓度的增加而增大。
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