但是,这一点很重要,它们的繁殖量与那些只有父方抚养幼儿的鸟类的数量相当。
But, and this is important, their clutch volumes matched those of birds that have only male parental care.
利用愈伤组织法对咖啡短体线虫进行了人工繁殖,并分析讨论了温度、培养时间、接种量对繁殖量的影响。
Pratylenchus coffea was monoxenically reproduced on carrot disk culture, and the effect of time, temperature, and inoculum density on reproduction were discussed in the study.
这样便可保护当地的繁殖种群,也就是说可维持充沛和稳定的捕获量。
This way local breeding stocks are preserved, meaning that fish catches should remain abundant and stable.
这种无脊椎动物以惊人的繁殖速度占领海洋,后分解为高浓度碳生物量,细菌难以有效吸收。
The invertebrates, populating the seas in ever-increasing numbers,break down into biomass with especially high levels of carbon, which thebacteria cannot absorb well.
间接损失包含人的生产力的损失以及家畜的生长速度、繁殖能力和产奶量的下降。
Indirect costs comprised human productivity losses and the reduction in growth, fecundity and milk production in livestock.
硅藻繁殖迅速,有些硅藻物类仅5个小时就能让其生物量翻一番。
They multiply rapidly—some species double their biomass in as little as five hours.
鸟类学家们研究发现,在整个繁殖季节的过程中,雀蛋一产下就弃巢而去的行为提高了这些遗弃巢穴的山雀的产雏量。
They found that, over the course of the breeding season, deserting the nest once eggs had been laid boosted the number of descendants produced by the bird that fled.
虽然不致造成立即伤害,含菌量高意味卫生情况恶劣,可以成为更有害细菌的繁殖场所。
While not immediately harmful, elevated levels of bacteria indicate poor hygiene and can act as a breeding ground for more serious germs.
土壤酶活性的提高表明改良后的土壤结构、性能更适宜土壤微生物的繁殖和生长,土壤中的微生物量增加。
Increased soil enzyme activity means that the amended soil structure and properties were very beneficial to the reproduction and growth of soil microorganisms.
试验证明,二甲胺四环素可极大地降低病毒量,而且影响T细胞的活化与繁殖。
Experiment proved that minocycline could greatly reduce the virus load, but also affects T-cell activation and reproduction.
针对香根草的需求量较大和种苗供不应求的现状,综述了国内香根草繁殖方法的研究进展。
This paper summarized domestic research progress on reproduction ways of Vetiver grass, with wider requirement and unable to meet the demand.
漂浮浒苔强大的繁殖能力是导致其生物量快速增长而引起绿潮爆发的主要原因之一。
As a result, the strong reproductive capacity of floating green tide algae Ulva prolifera might be the main reason of green tide occurrence.
生命周期、世代时间、繁殖力和产卵量是决定这两种桡足类垂直移动的主要因素。
Life cycle, generation time, fecundity, and egg production quantity are the main factors to determine these two species' vertical migration.
植物次生化合物可降低动物的食物摄入量及消化率、蛋白质可利用率。某些次生化合物还影响植食性哺乳动物的正常繁殖活动。
Plant secondary compounds could decrease the food intake, digestibility and protein availability, and some compounds could effect the normal reproductive performance of herbivorous mammals.
通过用繁殖码本,使CELP编码的计算量减少近一个数量级。
The computational cost of CELP coding can be reduced more than an order of magnitude by using the populating code book.
生姜利用种块繁殖,用种量大,前期投入高,如何合理确定用种量,以获得最佳产量与效益,是当前生姜生产中亟待解决的问题。
Rhizome is the stock part of ginger in production. How to decide the size of seed-rhizome in production is a problem imperatively needed to solve in order to gain the optimal yield and benefit.
近几十年以来,人们对奶牛的选育一直偏重于提高奶牛的产奶量,伴随而来的是奶牛的繁殖能力、使用寿命等性能的恶化,从而导致一定程度上奶牛业经济效益的下降。
People are interested in improving production of dairy cattle over the last decade, meanwhile the trend to poorer fertility and longevity is obvious, and a decline in economic has been observed.
通过用繁殖码本,使CELP编码的计算量减少近一个数量级。
The computational cost of CELP coding can be reduced more than an order of magnitude by using th…
通过用繁殖码本,使CELP编码的计算量减少近一个数量级。
The computational cost of CELP coding can be reduced more than an order of magnitude...
因此,宜宾成了竹燕窝最集中的产地,但由于竹燕窝野生量非常小,人工不能繁殖,市场需求旺盛,竹燕窝价格节节攀高。
Therefore, YiBin, becomes the most concentrated place. However, the price of the bamboo birds nest is rising and rising because product doesn't meet the market demand.
因此,宜宾成了竹燕窝最集中的产地,但由于竹燕窝野生量非常小,人工不能繁殖,市场需求旺盛,竹燕窝价格节节攀高。
Therefore, YiBin, becomes the most concentrated place. However, the price of the bamboo birds nest is rising and rising because product doesn't meet the market demand.
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