標(biāo)題: ASTM F 1795-2000 空氣或氮?dú)庀到y(tǒng)減壓閥標(biāo)準(zhǔn)規(guī)范 [打印本頁(yè)] 作者: 兌水 時(shí)間: 2009-12-3 09:14 標(biāo)題: ASTM F 1795-2000 空氣或氮?dú)庀到y(tǒng)減壓閥標(biāo)準(zhǔn)規(guī)范 F1795-00 Standard Specification for Pressure-Reducing Valves for Air or Nitrogen Systems