Bubbles float centripetally from the thin froth area and upward from the central part of liquid column area.
气泡分别从薄层区径向向内和从液柱区中心部位轴向向上进入泡沫区。
2
A localized heat source centripetally heats a vertical glass pre-form, while a pressurized air source blows the heated glass to expansion.
局部加热源向心地加热垂直的玻璃预成型体，同时用压缩空气吹制加热的玻璃以使其膨胀。
3
An air bearing may centripetally blow air against the expanding pre-form to limit expansion and prevent contact of the pre-form with the localized heat source.