| 发明名称 |
(B2) ;ARRANGEMENT OF SIDE GUIDES FOR WEDGE-TYPE SHUT-OFF MEMBERS OF INDUSTRIAL FITTINGS IN PARTICULAR OF VERTICALLY AND HORIZONTALLY MOUNTED LARGE-DIAMETER REGULATING GATE VALVESGANA V PROMYSHLENNOJJ ARMATURE,GLAVNYM OBRAZOM V REGULIROVOCHNYKH ZADVIZHKAKH BOL''SHOGO DIAMETRA DLJA VERTIKAL''NOJJ I GORIZONTAL''NOJJ USTANOVKI |
