In traditional, if the freedom degree of workpiece is repeated and limited by multiple positioning component, it is considered as theinterim positioning. In practice, the general technical requirements do not allow interim positioning, but in the machining process of large part, it stillneeds increasing the positioning clamping rigidity through interim positioning to prevent workpiece deformation. Therefore it is key to distinguish interimpositioning and fake interim positioning in locating fixtture design.%传统意义上认为工件某个自由度由多个定位元件重复限制称为过定位,在实际应用中,一般工艺要求不允许出现过定位,然而在大型零件加工过程中仍然需要过定位来增加定位装夹刚度,防止工件变形,因此正确区分过定位与虚设过定位成为夹具设计的关键.
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机译：Chinese Aesthetics and Performance Practice in Three Works for Piano by Chen Yi: Tunes from My Home, Northern Scenes, and Four Spirits =浅析陈怡含有钢琴的作品中涉及到中国艺术美学及演出实践的三首作品：钢琴三重奏《家乡的歌》，钢琴独奏《北方景色》，钢琴协奏曲《四灵》
