vacuums的音标？

n.真空， 真空状态， 真空度， 空洞...

Excessive energy is also required to achieve appropriate pressures and vacuums.还需要额外的能量来造成所需的压力和真空.My personal theory is that needs and desires create mental vacuums.我个人的理论是,需求和欲望制造了思想真空.Both vacuums and pure oxygen cond...