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预当力后张混凝土结构委员会于1990年11月21～24日在安徽黄山市召开第二次学术交流会,会议主要交流了无粘结预应力混凝土结构和大吨位预应力混凝土结构
The pre-committee post-tensioned concrete structure committee held the second academic exchange meeting on November 21-24, 1990 in Huangshan City, Anhui Province. The meeting mainly exchanged unbonded prestressed concrete structures and large-tonnage prestressed concrete structures.