reproductive rate

常见例句

Objective To compare the effects of colony oviposition and single tube oviposition for improving the reproductive rate of Anopheles anthropophagus .
目的比较群体产卵法与单管产卵法对提高嗜人按蚊繁殖率的效果。
Although the birds aren't listed as endangered, threats to their populations can pose serious risks, because the species has a long life span and a low reproductive rate.
尽管目前棕颈鹭没有被列入濒危名单，但由于寿命较长，繁殖率较低，它们的种群数量亦面临着严重的威胁。
Under the conditions of less rainy days during the blooming period, the temperature is the main factor influencing the reproductive rate, then is the duration of day and the velocity of wind.
在阴雨较少的情况下花期温度是影响繁殖率高低的主导因素，其次为日照时数和平均风速。

Polar bears are a long-lived species with a low reproductive rate, so recovery from overharvesting could take many decades.
ECONOMIST: A clash between environmentalists and Inuit rights
Whale researchers use population models that factor a species' reproductive rate and its natural mortality to come up with an estimate of how many are likely dying.
MSN: Feds to reroute SF Bay ships to protect whales
Because of illiteracy, women face major socioeconomic challenges including high risks with regard to reproductive health with reports suggesting that the maternal mortality rate in the country is among the highest in the world.
UNESCO: Learning for Life