ratio n. (pl. ratios) 1.比,比率,比值;比例;系数。 2.【经济学】复本位制中金银的法定比价。 the ratio 3:2 (读作 the ratio of three to two )3对2之比。 arithmetical ratio 公差,算术比。 direct ratio 正比。 inverse [reciprocal] ratio反比。 current ratio 电流比,电流变换系数。 nutritive ratio 营养率。 vt. 1.用比例方式表达;求出…的比值;使…成比例。 2.将(相片)按比例放大或缩小。
The operation of the proposed system is thoroughly analyzed and how to control modulation ratio meets each pulse magnetic reset is deduced 对如何通过控制调制比使高频变压器能满足逐个脉冲磁复位进行了数学推导。
Via theoretical analyzing , we can find that the step reference waveform modulation strategy is an ideal one when frequency modulation ratio is not very high 通过理论分析,可以看出阶梯波调制pwm的确是在频率调制比不高时较好的调制方式。
The magnetic reset by each pulse is proposed in this paper . that is how to control modulation ratio and let the increase of magnetic flux with each high frequency pulse reset to zero . so it will avoid magnetic flux saturation 本文采用逐个脉冲磁复位技术,就是在每个高频脉冲之后及时采取措施,使每一个高频脉冲引起的磁通增加都回复到零,从而避免磁芯磁通饱和。