| 发明名称 |
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 |
