In trying to record the brain's electrical activity off the scalp, he adds, "people assumed that the signal-to-noise ratio and the information content of these signals were limited."

在尝试记录头皮以下的大脑电活动时，他补充说，“人们想当然的认为信号的信噪比和这些信号的信息内容是有限的。”

The activity rate is the ratio between the number of tokens currently assigned and the total number of tokens for an endpoint.

活动频率是指当前分配的令牌数和端点的令牌总数的比率。

This is very economical, with a high ratio of visual activity to value.

这是非常经济的，具有很高的视觉活动的比率值。

Whether the age ratio is a prophecy or fallacy, the importance of pension activity to markets is clear.

无论年龄比例是预言还是谬论，退休金活动对于市场的重要性显而易见。

The activity of soluble starch synthase was 1. 3 times higher that that of the granule-bound starch synthase, corresponding to the ratio of amylopectin to amylose.

可溶性淀粉合酶峰值比淀粉粒结合的淀粉合酶活性峰值高1．3倍，与支链淀粉和直链淀粉的比例相对应。