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TEACHING-AID DEVICE ON STRUCTURAL MECHANICS
TEACHING-AID DEVICE ON STRUCTURAL MECHANICS
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机译:结构力学教学设备
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摘要
a training device for construction mechanics for 2009.no. 1124371 supplemented толкателем 10, which is located on the side of the cylindrical shell at 14.what позвол ет expand educational opportunitie
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