The initial design included a large hole at the top of the building, where Mr Mori hoped to install a Ferris wheel.

最初的设计包括在楼顶留出一个大洞，森稔希望在那里安装一个摩天轮。

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Use the extend curve command with the smooth option to extend the wheel hole edge using the background bitmap as reference.

使用曲线命令延长的顺利选项，延长车轮使用黑洞边缘的背景位图作为参考。

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The formula for calculating the average crack growth rate of 840d wheel web hole is presented.

给出了840d车轮辐板孔平均裂纹扩展速率的计算公式。

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"It is possible that with an old, not properly maintained fifth wheel that the device can get loose, the sides can wear away, the hole that the pin fits into is no longer snug and rigid, " Scott said.

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