neck groove 中文意思是什麼
neck groove
解釋
線槽-
Steel pipe welding neck flanges with tongue and groove face
榫槽面對焊鋼制管法蘭 -
Loose plate steel pipe flanges with welding neck collar with tongue and groove face
榫槽面對焊環板式松套鋼制管法蘭
分享友人