标称孔径 meaning in English
nominal aperture size
nominal pore size
normal pore size
Examples
- Shipbuilding . kingston valves , nominal bore 50 - 175 mm . body
造船工业.标称孔径"金士顿"阀门.阀体 - Shipbuilding . kingston valves , nominal bore 50 - 175 mm . nomenclature of parts
造船工业.标称孔径mm "金士顿"阀门.零件名称