您要查找的是不是：
- Random mating within a breeding population. 自由交配在一个育种群中自由交配
- effective breeding population 有效育种群体
- The breeding population; retained a few bulls for breeding purposes. 繁殖种群；留下几头公牛育种。
- Large Specific Area And Uneasily Contamination, Which Provides For Effective Breeding Environment. 大具体领域和不易污染，其中规定，为有效繁殖环境。
- The breeding population must cycle through a selection phase before each successive regeneration stage. 每个后续世代更换之前，育种种群必须经过一个选择循环。
- Usage safety, but the long range uses, pesticide effect stabilizes enduringly, nutrition increases all round, the economic effect breeding. 使用安全，可长期使用，药效持久，稳定，营养全面，增加养殖的经济效益。
- STUDY ON THE ACTIVITIES AND BIOMASS PRODUCTION OF BREEDING POPULATION OF CHINESE POND HERON ARDEOLA BACCHUS. 池鹭繁殖种群数量、活动规律和生物生产量的研究
- On medicine, mu Lilu luxuriants growth to had been examined to issue have a lot of significant component, be a kind accepted the most effective breed. 在医学上,木立芦荟已经被检验出具有很多有效成份,是一种公认最有效的品种。
- Koza's system created 500 to 10,000 different individual logic trees as the breeding population. 柯扎的系统像繁殖人口一样创建了500到10,000个不同的独立逻辑树。
- Usually a relative measure: the average contribution to a breeding population by a phenotype or a class of phenotypes. 通常是一个相对的标准：指某一表型或一类表型对某一个繁育群体的平均贡献值。
- Despite the thousands of Bigfoot that must exist for a breeding population, not a single body has been found. 没有一个“大脚”被猎人杀死或是被超速的汽车撞死，连自然死亡的都没有。
- Gene pool The total number and variety of genes existing within a breeding population or species at a given point in time. 基因库:是繁殖种群或种类在某一给定的时间所有基因的数量或种类。
- Now the size of breeding population in Luxi cattle should be enlarged to maintain the genetic diversity level of population. 目前应扩大保种群的数量，以维持群体内的遗传多样性。
- It Adopts Natural Quartz Sand, Through Heating, And Is Characteristic Of Stable Chemical; Large Specific Area And Uneasily Contamination, Which Provides For Effective Breeding Environment. 它采用天然石英砂，通过加热，并特性稳定的化学;大具体领域和不易污染，其中规定，为有效繁殖环境。
- As efforts to prevent the bluefin tuna suffering a similar fate are increased, some conservationists wonder whether there will still be a breeding population left to save. 在防止金枪鱼惨遭同样的命运方面的努力不断加强的同时，一些资源保护学家在质疑---是否还有一个可繁殖的数量可以被保护。
- We found coefficient of inbreeding will increase in close breeding populations. 发现麋鹿占群优势雄性数目越少，其有效种群越小。
- Based on the food habit of the breeding population of Bufo raddei, the food diversity and trophic niche were studied in Changchun, Jilin province in 1995 from April to May. 作者于1995年4-5月份在长春市调查了花背蟾蜍繁殖种群不同繁殖时期的食性，并通过食物多样性和营养生态位对食性变化进行了分析。
- Therefore, it is feasible to scheme of new breeding population of mutton sheep which crossing fixed was selected ideally the three-crossbreed or second-crossbreed. 因此，选择理想型的三代或二代杂种羊进行横交固定培育新品种的技术方案是可行的。
- That's rather an effective use of color. 这种使用颜色的手法效果相当好。
- The relict gull Ordos subpopulation, the biggest breeding population of relict gulls in the world, took at least 60 percentage of the insurance quantity of the whole available colonies in the world. 摘要鄂尔多斯繁殖群作为自然界中的全球遗鸥的最大种群，其对遗鸥有效种群（全部繁殖个体的总量）的保有量应占全球总量的60%25以上。
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海词词典，十七年品牌
