当然，贝拉德要求助于电脑，不过你也可以用最简单的办法在自家客厅计算圆周率，所用材料只是几根针和一张横格纸。

He used a computer, but you can also calculate pi at home with some needles and a sheet of lined paper.

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因而机器有多类控制装置，如选针、三角变换、密度调节、针床横移、导纱器变换装置等。

So the machine has many controlling assemblies such as needle selecting, triangle changing, density adjusting, needle bed moving, thread-carrier changing etc.

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介绍了利用改变编织密度、移圈收放针和持圈收放针的方法，在普通横机上编织三维成型织物的基本工艺。

This paper introduces the basic technology of 3d fashioned knitting on flat knitting machine by modifying knitting density and stitch transfering and holding.

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