养分的产生将越发接近海平面,促进食物链惠及不同的物种,因为它们往北迁移。
科学家正在开展试验确定营养水平必须下降到什麽地步才能阻止藻华的形成。
因此,表格中显示的最低需求量是以提纯后食物的吸收率来计算的。
人体获得维生素D的主要来源是通过皮肤吸收太阳的中波紫外线。
本发明排气口加大,避免了培养液表面张力造成的背压。
已知的,但尚未被发现,在食物中发现的化合物,并进行适当的协同提供必要的营养。
营养盐与盐度呈现出负相关的规律性,无机氮表层高于底层,无机磷底层高于表层;
大豆根系对养分的吸收机制只是所有作物吸收养分的最一般问题的一部分。
β胡萝卜素已被发现可以帮助身体里的每个细胞保持健康,而且很巧,它还是针对皮肤的营养物。
通过将来源于另一种植物的基因导入目标植物中,科学家能够培育出一种可以合成更多营养素的植物。
在日常生活中醋的食用价值广泛,有人说这是一种营养强化剂,一点也不夸张。
毒物因子和营养盐类因子评价结果坝前坝后都略有好转。
任何营养成分,只要你过量,会造成伤害你们,摄入不足,同样会造成你的伤害。
所有这些为春夏季节如此巨大的浮游生物潮提供了营养充足的环境。
树叶落下之后,遗留下来的是些细胞壁和营养耗尽的原生质。
美国医学家称硒是至今发现最强烈也最具潜力的抗癌营养素。
当然有些脱发是与年龄相关的,但是,如果是非正常脱发,就可能是营养不足的问题了。
小房间之间有像人体内的血管一样的通道相连,这种通道内有营养物质流动。
报纸继续写道,“据消息人士透露,公爵夫人靠打点滴来增加体内的水分和营养水平。”
然而当流入海中的营养盐越来越多时,海面开始出现浓密的藻华。
作为一个骨建设养分,尤其重要的是儿童和青少年,因为骨骼仍在增长。
大针茅草原围栏封育样地土壤的有机质、全量养分和速效养分含量均有所增加;
豌豆苗涵盖了所有的人体所需营养素,且营养素含量均衡都非常高,名列前茅。
当把从发电厂排放出来的二氧化碳溶入水中时,藻类能把绝大部分二氧化碳当作养料而吸收,从而茁壮生长。
在我的事业初期,我在非常传统意义上传授营养学,一个营养素又一个营养素,那就是我们做研究的方式,那就是我教学的方式。
他说,改变洋流和养分有效性可能有助于触发水母繁盛。
表明武定鸡绿壳蛋系具有很高的营养价值,蛋品质优良。
1·The nutrient is quickly leached away.
养分很快就被滤掉了。
—— 《牛津词典》
2·The function of forest floor on water conservation, nutrient supply, promoting biological respiratory intensity and soil development are discussed.
探讨了森林地层在水土保持、养分供应、促进生物呼吸强度和土壤发育等方面的作用。
3·Long-term effects are primarily mediated by changes in tree species composition and the consequent alterations of forest structure, productivity, and nutrient uptake.
长期影响主要是由树种组成的变化以及随之而来的森林结构、生产力和养分吸收的变化所导致的。
4·We need to ensure that our enduring legacy is not to wipe out the small things that provide us with great benefits such as nutrient recycling and climate regulation.
我们必须确保我们的悠久遗产不至于把这些小东西彻底毁掉,因为它们向人类提供了巨大的好处,如养分循环和气候调节。
5·The combined effect of all these vitamins and phytochemicals seems to have much greater power than one nutrient taken alone, Mayne explains.
梅恩解释道,所有这些维生素和植物化学的综合效果似乎比单一摄取的养分提供更大能量。
1·You said that the nitrogen cycle is also an important nutrient cycle.
你说了,氮循环也是一个重要的营养循环。
2·When nutrients are used over and over in the environment, we call that a nutrient cycle.
当营养物质在环境中被反复使用时,我们称之为营养循环。
3·For example, an invading nonnative plant could alter the quantity of leaf litter production, which would alter nutrient contributions to the soil.
例如,外来植物的入侵可能会改变落叶的数量,从而改变对土壤的营养贡献。
4·The three most important nutrient recycles are the nitrogen cycle, the carbon cycle and the one we are going to talk about today, the Phosphorus cycle.
这三种最重要的营养循环包括氮循环、碳循环和我们今天要讲的磷循环。
5·Because of the importance of nutrients and their scarcity, nutrient recycling is one of the most significant eco-system processes that we'll cover in this course.
由于养分的重要性和贫乏性,营养循环是我们在这门课中会讲到的最重要的生态系统过程之一。
1·Very few foods are natural sources of this nutrient.
很少有食物是这种营养素的天然来源。
2·One cup of avocado has 23% of the Daily Value for folate, a nutrient important for heart health.
一杯鳄梨汁就已经有每日所需的对心脏健康非常重要的营养素—叶酸的23%。
3·More nutrients and vitamins may be bred into plants, combating the nutrient deficiencies that affect so many of the world's poor.
可以将更多的营养素和维生素育入作物,防治正在影响世界如此众多穷人的营养素缺乏症。
4·It would be wrong to purposely deprive people of an essential nutrient in order to study the effects.
为了获得实验结果而有目的地剥夺人所需的基本营养素的做法是不对的。
5·Protein was discovered in 1839. At that time it was considered to be a very important nutrient.
蛋白质是1839年被发现的,它在当时被视为非常重要的营养素。
1·In situations where iron is scarce, the bodies of mice and rats (and presumably, by extension, people) seem able to collect the nutrient more efficiently than pathogens do.
在铁匮乏的情况下,小鼠和大鼠(也许可外延到人类)的动物体比病原体更能有效地获得营养物。
2·The third study examined a specific nutrient, a sugar called fructose that is abundant in fruit.
第三个研究了一种具体营养物,一种在水果中富含的果糖。
3·Moreover, some very widespread tropical parasitic diseases reduce nutrient absorption, impair the development of mental functions, and compromise educational outcomes.
此外,有些热带寄生虫病的传播十分广泛,这降低了营养物的吸收,损害了心理机能的发育,并危及到教育的成果。
4·Nutrient pollution, such as nitrogen pollution, from lower latitudes may float north and promote algal growth in the Arctic.
低纬度地区的营养物污染,如氮污染,可能会漂向北部,促进北极藻类的生长。
5·Food is a nutrient that makes humans and animals grow.
食品是一种能使人和动物生长的营养物。
1·"It's a slow and creeping and nutrient life-bringing pulse of water that comes into the Delta every year and people have been living with it for thousands of years," he said.
“这股水流每年来到三角洲,缓慢前行、滋养生命,数千年来人们都赖此为生。”他说。
2·Methods: the origin of nutrient artery of the abducent nerve root, and neurovascular relationships were observed on 18 brain stems.
方法:选取18例脑干,观测展神经根池段的滋养动脉来源及其与邻近血管的关系。
3·Results: (1) the position and external diameter of peroneal artery, its accompanying vein and the distribution of fibular nutrient artery were observed.
结果:(1)观测了腓动脉及其伴行静脉起点的位置和外径及腓骨滋养动脉的分布。
4·Vessel with various diameters is needed as repair material, autograft or allograft, even nutrient vessel for engineering tissues in clinic.
临床上需要各种口径大小的血管作为手术修补材料或者其他自体或者异体甚至组织工程组织的滋养血管。
5·Objective To elucidate the effect on blood supply of the tibia following injury of its nutrient artery.
目的探讨滋养动脉结扎对胫骨血供的影响。