welds crack的相關資料：
臨近單詞
Weldner
weld
welding construction in winter
welded piping branch junctions
welding wire of aluminum alloy
welded hollow spherical joints
Welding sewn in pressure vessel
welding rod with acidic coating
welding I-shaped crane girder
Welding of Dimple Jacket Vessel
welding and assembling technics
weld between tubesheet and tube
