Trace and cut a circle out of the poster board. Then cut out a 1/2″ to 1″ hole in the center of that circle, depending on whether you’re doing a large or small hat.
首先，在纸板上剪一个圆，在圆的中间剪一个1/2英寸到1英寸的孔，具体大小取决于你所做的饰品大小。
A close encounter with another star put the doomed star (orange circle) on a path that took it near a supermassive black hole.
一颗过于接近已经熄灭的恒星的恒星，会进入一颗超级巨型黑洞的轨道。
An example is a bolt hole circle, in which the diameter of the bolt circle, the spacing of thebolt holes, and other parameters must be specified.
例如螺栓孔圆形，螺栓圈的直径，其中必须指定螺栓孔和其他参数的间距。
The razor processing of the inner hole outer circle and the end face of the work piece can be carried out simultaneously only requiring a cutting tool and two arbors.
只需用一把刀具、二把刀杆就可同时进行工件的内孔外圆和端面的精剃加工。
Warm prompt: Between the optimism and the pessimist, its difference is very interesting: the optimism saw to is fries in oil the circle cake, the pessimist saw to is a hole.
温馨提示：乐观者与悲观者之间，其差别是很有趣的：乐观者看到的是油炸圈饼，悲观者看到的是一个窟窿。
Chinese ancient copper COINS have a square hole inside a circle.
中国古代铜钱的形状是外圆内方的。
The importance of data interpolation in CNC machining system was discussed with the example of non-circle piston-hole machining system , and a new interpolation method was introduced.
本文以异型销孔数控镗削系统为例论述了数控加工系统中的数据插补的重要性，并介绍了一种新型的数据插补方法。
To ensure the degree of processing die's hole circle, it is also designed into a stable, high accurate self-centering mold base, thereby improving the dies quality.
确保加工模具孔形的真圆度，该机又设计了稳定、高精度自定心的模座，从而提高模具的品质。
To ensure the degree of processing die's hole circle, it is also designed into a stable, high accurate self-centering mold base, thereby improving the dies quality.
确保加工模具孔形的真圆度，该机又设计了稳定、高精度自定心的模座，从而提高模具的品质。
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