楔形H形钢梁
tapered H-section steel beam
H型钢薄壁楔形梁
tapered H-section beam with thin web
H型钢楔形薄壁构件
h-section tapered member with thin web
W－S（楔形一条形）电极
W-S (Wedge-Strip) cathode
边楔形金刚石强化柱齿
eccentric wedge diamond enhanced insert
电动标准楔形板
electric standard cuniform board