At a certain electric field ratio, five electrode, systems could be used to change the ion beam current and the beam energy to a certain extent.

在一定电场强度比下可以用五电极系统在一定范围内改变束电流或束能量。

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Both the aspect ratio and coverage of field are important factors in defining a true panoramic image.

宽高比和覆盖范围都是评判一张照片是否是全景图的重要因素。

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Gears of first stage are changeable so that the operator can change the gear ratio based on current field condition.

第一级传动齿可变，驾驶员可根据电流与磁场情况来改变齿数比。

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So there is more even playing field instead of the 21:1 ratio, we are doing much more, focusing on the positive.

比起21比1的比率，两方更均衡，我们做得更多，除了专注于积极的一面。

哈佛公开课 - 幸福课课程节选

Whatever the reason, the sex ratio in ASD is perhaps the most consistent finding in the field but perhaps the least understood.

CNN: How girls and boys differ when it comes to autism