Lack, however, suggested that clutch size—the number of eggs a bird lays per breeding cycle—is far below the potential limit of egg production.
然而，缺乏情况表明卵的大小——每一个繁殖周期下的蛋的数量——远低于产蛋的潜在限制。
One particular transposon first appeared about a million years ago. And by seeing where these sequences now sit, scientists can get a sense of the size of the breeding population back then.
位置固定的转位子第一次出现是在一百万年前，通过观察现在这些序列的排列顺序，科学家们就可以了解到那个时代的人口数量。
Larviciding measures at mosquito breeding sites are the most effective form of vector control if breeding sites can be clearly identified and are limited in size and extent.
如果蚊子滋生地点可以明确确定并且范围和程度有限，就地采取杀幼虫措施就是十分有效的媒介控制形式。
And by seeing where these sequences now sit, scientists can get a sense of the size of the breeding population back then.
位置固定的转位子第一次出现是在一百万年前，通过观察现在这些序列的排列顺序，科学家们就可以了解到那个时代的人口数量。
Although the number of bones is roughly the same in all breeds, there is considerable variation in the size and shape of individual bones, as the result of selective breeding.
尽管大致上所有品种都拥有相同数量的骨头，但因选择性育种的缘故，狗狗骨头的大小和形状也会有相当大的差别。
That number is smaller than current figures for the effective population size (or number of breeding individuals) for endangered species such as chimpanzees (21, 000) and gorillas (25, 000).
当时的人数甚至不及现在濒临灭绝的黑猩猩（21000头）和大猩猩（25000头）的有效种群大小（即能生育的个体数量）。
We simulated the impacts of breeding herd size, reproductive skew and numbers of breeding stags on the inbreeding coefficient of Père David's deer.
模拟分析了繁殖群体大小、繁殖偏倚和占群优势雄性数目对麋鹿的有效种群大小的影响。
Feed crop breeding by polyploidy can enlarge the plant cellular size, so the plant has the thick and high stem, thick blade, and increases the content of protein, carbohydrate, vitamins and minerals.
多倍体在饲料作物育种上可使植物细胞增大而导致植株茎粗、高大、叶片宽厚；并且使植株的蛋白、糖分和维生素及矿物质含量有较大的提高。
This result incdicated that the size of flag leaf affected the grain weight per spike, and it was successful to increase the size of flag leaf and the grain weight per spike in our wheat breeding.
由此可见，旗叶大小对穗粒重有着显著正向效应，因此在育种栽培过程中，注意增加旗叶面积对提高穗粒重是有益的。
For free-range farmers, the factors that affect their breeding pigs are net income, farmland size, the quantity of family labor.
而多数规模化养殖户仍然依据当期价格决定下一期的饲养数量，这也是造成生猪价格波动的主要原因。
However, chimpanzees are highly endangered species, and size large, easy on the breeding and fed, expensive and difficult as the animal model for AIDS Research.
然而，黑猩猩是高度濒危物种，而且体型巨大，不易于繁殖和豢养，费用昂贵，难以作为艾滋病研究动物模型。
However, chimpanzees are highly endangered species, but also a great size, easy breeding and rearing, the cost of expensive, difficult to study as an animal model of AIDS.
然而，黑猩猩是高度濒危物种，而且体型巨大，不易繁殖和养育，费用昂贵，难以作为艾滋病研究动物模型。
Brought up in Rishton, West Yorkshire, her small size means she is used for breeding, explained Mrs Ryder, who recently moved to Crossley Hall Farm, near Congleton.
最近刚搬去格劳斯农场的瑞德太太解释说：“它娇小的身材意味着它只能作为宠物来养。”
Brought up in Rishton, West Yorkshire, her small size means she is used for breeding, explained Mrs Ryder, who recently moved to Crossley Hall Farm, near Congleton.
最近刚搬去格劳斯农场的瑞德太太解释说：“它娇小的身材意味着它只能作为宠物来养。”
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