hollow beam

短語詞組

短語

• hollow electron beam [電子]空心電子束;中空電子束
• Hollow Flange Beam 空翼緣梁
• hollow no beam roof 空心無梁樓蓋
• hollow girder beam 空心板梁
• hollow w beam 空心梁
• prestressed hollow plate beam 先張空心板梁
• hollow arbor beam 琯梁
• hollow board beam 空心板梁
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