片语

propagation coefficient繁殖率；[物] 传播系数

joint reproduction rate综合再生产率

bacteria reproduction rate细菌繁殖速度

reproduction survival rate再生残存率

net reproduction rateThe net reproduction rate (NRR) is the average number of daughters that would be born to a female (or a group of females) if she passed through her lifetime conforming to the age-specific fertility and mortality rates of a given year. This rate is similar to the gross reproduction rate but takes into account that some females will die before completing their childbearing year

paternal reproduction rate[统计]

basic reproduction rate基本繁殖率

nuptial net reproduction rate已婚凈再生产率

Gross reproduction rateThe gross reproduction rate (GRR) is the average number of daughters that would be born to a woman (or a group of women) if she survived at least to the age of 45 and conformed to the age-specific fertility rate of a given year. It is often regarded as the extent to which the generation of daughters replaces the preceding generation of female

reproduction rate of population人口繁殖率

英汉例句

• all parameters in the important concept-basic reproduction rate provide science evidence for malaria epidemiologic research and disease control and prevention.

  其基本繁殖率这一重要概念中的各项参数，为疟疾的流行病学调查和制订预防、控制措施提供了依据。

• the mtt test indicates that the cell reproduction rate of each group has statistical significance after being incubated for 2,4 and 6 days (p0.01).

  mtt结果显示，细胞在培养1天、2天和4天后各实验组细胞的增殖率有统计学意义（p0.01）。

• in this paper, the effect of lignosulfonates on bacteria reproduction rate in recirculated cooling (water) has been studied by plate counting method.

  通过平皿计数法研究了不同类型木质素磺酸盐及其组分对循环冷却水中细菌繁殖速度的影响。

• the fieldwork showed that seeds reproduction was the main approach of natural species renewal. but its reproduction rate was extremely low, only with 0.52%germination rate.

  经调查，有性繁殖是羌活自然种群更新的主要方式，但自然繁殖率极低，野生种子发芽成苗率只有0.52%。

• it is necessary to drop the infection efficiency by over 85% through protection measures for reducing the basic reproduction rate below the critical level.

  防护措施必须使感染效率下降85 %以上，才能使医院内传播的基本繁殖率降至临界值以下。

• campbell hamsters that have a fast reproduction rate were fed for two years with ordinary soya beans, which are widely used in agriculture and those contain different percentages of gm organisms.

  用高繁殖率的坎贝尔仓鼠喂养两年的普通大豆，这些大豆广范用在农业生产中并且包含不同程度的转基因成分。

• daphnia magna reproduction rate increased with the decline in toxic concentration;

  大型溞的产溞率是随毒物浓度的增加而下降；

• this wild boar and strong disease resistance, reproduction rate , the purity of moderate, suitable for commercialization of the development, are pure green.

  此野猪抗病能力强、繁殖率高、纯度适中、适合商品化开发，是纯正的绿色食品。