The mortality rate was way down.
死亡率大大降低。
The mortality rate was way down.
死亡率大大降低。
The mortality rate of premature infants had close relation with gestational age, birth weight and sclerema neonatorum.
早产儿死亡率与孕周、体重密切相关，并
症者死亡率更
。
Fig. 1. Cumulative preadult mortality rate of Bemisia argentifolii, originating from three groups of host plant, on six
图源类作物的
虱在六种杂草的成虫前期累积死亡率.
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