octagonal steel 中文意思是什麼
octagonal steel
解釋
八角鋼-
Octagonal metallic ring gaskets for steel pipe flanges joints
鋼制管法蘭連接用八角形金屬環墊 -
Hot - rolled hexagonal and octagonal steel bars dimensions, shape, weight and tolerance
熱軋六角鋼和八角鋼尺寸外形重量及允許偏差 -
Hot - rolled hexagonal and octagonal steel bars - dimensions, shape, weight and tolerance
熱軋六角鋼和八角鋼尺寸外形重量及允許偏差
分享友人