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常熟亚太纸业磨辊车间内的ＷＰ７／１１型辊子磨床，因精度要求很高，其基础设计成抗外界干扰能力强的悬置式振动基础，南北长１８．８ｍ、东西宽５．３９ｍ，由承台、基础槽和基础３部分组成。基础通过底部型钢组焊的格排梁被吊挂在３６根高强锚栓的端部，高强锚栓的上端部有?
The WP7/11 type roller grinding machine in Changshu Asia Pacific Paper Rolling Mill has a high precision requirement. Its basic design is a suspension vibration foundation with strong external disturbance resistance. It is 18.8m long from north to south and 5.39m wide from east to west. Bearing platform, foundation groove and foundation 3 parts. The basic grid beam welded by the bottom-type steel group is hung on the ends of 36 high-strength anchors. Is the upper end of the high-strength anchors?