升压

升压	shēng yā	to boost the pressure (of a fluid) / to boost (or step up) the voltage
升	shēng	to ascend; to rise / to promote; to elevate / liter / unit of dry measure for grain (= one liter or one-tenth dou 斗)
升	shēng	to ascend; to rise (variant of 升) / to promote; to elevate (variant of 升)
升	shēng	to ascend; to rise (variant of 升) / to promote; to elevate (variant of 升)
压	yā	to press / to push down / to keep under (control) / pressure
压	yà	used in 压根儿 / used in 压马路 / used in 压板