有下降压力很头痛，但上升压力绝对不坏。

A currency facing downward pressure is a headache, but one facing upward pressure is not badly off.

youdao

文中介绍了IGBT升压与降压式三相高频SPWM整流器的基本工作原理和控制方法。

This paper describes the basic working principles and control methods of three-phase high- frequency boost & buck IGBT SPWM rectifiers.

youdao

相对于降压式谐振开关电容变换器，升压式谐振开关电容变换器构成方式不同，潜电路发生条件也有较大区别。

Comparing to step-down resonant switched capacitor(RSC) converter, the composing principle of step-up RSC converter is different, so their sneak circuit conditions are not same.

youdao