阀门专业词汇 (I.B.valve) 铁体阀 (oil relief valve) 润滑系减压阀 (oil relief valve) 润滑系减压阀 2nd Stage Steam Supply 第二级蒸汽供给 2rd Stage Steam Supply line drain 第二级蒸汽供给管路排放口 2-way valve 两通阀 absorber valve 吸收电子管 AC electromagnet for valve 阀用交流电磁铁 acceleration valve 加速阀 accelerator pump outlet valve ball 加速器泵出油阀钢球 accelerator valve 加速器阀 accumulator blowdown valve 蓄热器排污阀 acid-proof valve 耐酸阀 acid-resistant stoneware valv