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防水卷材定(ding)伸保持器主要(yao)由滑動(dong)(dong)(dong)(dong)軸(zhou)承(cheng)座、滑動(dong)(dong)(dong)(dong)夾(jia)具、絲(si)桿、固定(ding)夾(jia)具及底座五部分組(zu)成(cheng)。轉動(dong)(dong)(dong)(dong)螺栓，螺栓推動(dong)(dong)(dong)(dong)活動(dong)(dong)(dong)(dong)夾(jia)板(ban)向下運動(dong)(dong)(dong)(dong)，使試件(jian)夾(jia)緊。當拉(la)伸試件(jian)時，轉動(dong)(dong)(dong)(dong)手輪，使絲(si)桿旋轉，從而使滑動(dong)(dong)(dong)(dong)夾(jia)具沿絲(si)桿移動(dong)(dong)(dong)(dong)，來實現對試件(jian)的(de)拉(la)伸。
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