研究采用化学蚀刻聚酰亚胺的方法来制作双面连接的单面挠性板，以满足精细手指的尺寸和位置精度的要求。

In the study, in order to get good precision of dimension and position of fine leads, chemical etching method is used to make high density double assess single-sided FPC.

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研究了单面完整约束系统的对称性与守恒量。

The symmetries and conserved quantities for the systems with unilateral holonomic constraints were studied.

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布制刷子单体通过进行整面热压着处理的 单面而强化，提高布材质的耐久性及拉伸强度，可降低破裂等的破损。

The cloth brush single body improves tension strength and durability of cloth materials by the heat pressing treatment of whole surface, which may reduce breakage such as break, etc.

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