英语翻译double flanged water meter pressure switch with isolating cock pressure gauge with isolating cock double air relief valve with isolating gate valve double flanged dimantiling pieceflanged flap valve

Double Flanged Butterfly Valve 是什么 英语翻译double flanged water meter pressure switch with isolating cock pressure gauge with isolating cock double air relief valve with isolating gate valve double flanged dimantiling pieceflanged flap valve 英语翻译Double Rotatable Flanged Reducers,in cast iron,with approved epoxy coat,including necessary tasks and fittings for control of the Water Supply 请问有谁知道Double-sphere Flanged Rubber flexible Joint,中文的! 英语翻译marine center-pivoted screw manual butterfly valvemarine center-pivoted flanged worm manual butterfly valve 英语翻译小女子求阀门翻译- Epoxy coated flanged RSV gate valves non rising spindle 是什么阀门啊? 英语翻译10%flanged dished head 和 2：1 elipsoidal head 头疼.是捏合机上镜面板的规格要求 英语翻译The power amplifier is offered both in die form and in a soon to be released ceramic flanged package. double double double double double double double double Double double