- studs-technical requirements
- 螺柱: double-screw bolt
- 技术条件: technical conditions; techni ...
- 螺柱和螺母通用技术条件: fasteners-general requirements for blots screws studs and nuts
- 技术条件: engineering factors; form of specification; requirement; technical conditions; technical provisions; technical specifications
- 锚技术条件: technical requirements for anchors
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