While they were in the brain-scanning machine, they were asked to do tasks that required concentration and attention.
VOA: standard.2009.12.19
We can never just have it there before us or, as I say, if we can--if we can--it's a very, very difficult act of concentration.
我们永远不能只面对着它,或者,要我来说,如果我们可以的话,那将需要高度集中注意力,这是很难的。
That signal is carried here, for example, by the concentration of second messengers - the concentration of something else.
这里这个信号由,第二信使的浓度,即另一种物质的浓度来传递
In fact,Cape May now boasts the single greatest concentration of late-19th Century architecture in the world!
VOA: standard.2010.03.15
In the case of a ligand-receptor, a chemical signal in the form of a concentration of ligand gets converted into a biochemical signal.
在配体-受体系统中,配体浓度这种化学信号,转化为生化信号
So, this is several months and this logarithmic scale on the Y-axis represents antibody concentration.
这是在几个月内,这里使用的是对数刻度,Y轴代表的是抗体的浓度
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