variable orifice perforated plate可变孔径穿流孔板
orifice-plate flowmeter孔板式流量计
orifice-plate孔板
orifice-plate design均流板设计
orifice-plate flowmete孔板流量计
orifice-plate ring孔板环
orifice e plate节磷板;孔板
orifice&plate挡板
intelligent orifice-plate flowmeter智能孔板流量计
The shortcoming of orifice plate flowmeter limits its further development.
孔板流量计的局限制约它的进一步发展。
参考来源 - 锥形流量计的研制