helical flow
短语词组
- Helical attenuation flow 螺旋衰减流
- helical -flow sludge blanket contact clarification 旋流接触澄清
- helical laminar flow 层流螺旋流
- outer -helical-flow 外旋流
- eccentric annuli helical flow 偏心环空螺旋流
- tangential helical flow turbine [机]切向螺旋流式涡轮
- helical flow pump 旋流泵 返回 helical flow